Living in the New Covenant

In the last two posts, we’ve been discussing the heart of fallen man and the New Covenant as the solution. When we look at the promises of the New Covenant against the needs of fallen humanity, we see that God has given the believer everything he or she needs to live in Christ (2 Peter 1:3-4). 

In this post, we are going to discuss some realities and implications of the New Covenant. As a fan of “theology meeting reality,” what does it mean for the believer? One of my favorite questions to ask is often, “So what?” We’ll take some of the most common and important questions about the New Covenant and see what the Scriptures say about them.

The Reality of the New Covenant

Question: Isn’t the change promised in the New Covenant just “positional” truth?

This is a common question when considering the New Covenant, and in fact, many Bible teachers teach this very idea, that the truth of the New Covenant is only “positional.” What they mean is, “This is how God sees us, since we are ‘in Christ’.” The implication is that the changes we’ve talked about didn’t really happen (as a matter of historical fact); we are to simply believe they did and live them out.

Without getting too technical, most of the debate centers around interpretation of Romans 6-7, particularly where Paul describes what happens to a person who is saved. The thrust of Romans 6 is union and identification with Christ. Because those passages don’t specifically mention the changes of the New Covenant, and because one of favorite phrases to describe Christians is one who is “in Christ,” many conclude that this truth is only positional in nature.

Thus, many (if not the majority of) Christians today live as though the New Covenant is only a truth to be believed, not an actual reality from which to ground their life on. My question to think about is, “Did God do what He promised He would do?” The Scriptures give us the answer:

God is not man, that he should lie, or a son of man, that he should change his mind. Has he said, and will he not do it? Or has he spoken, and will he not fulfill it? (Numbers 23:19)

The short answer, then, is “Yes! He accomplished what He promised.” In fact, the New Testament has much to say about the new Covenant. (In fact, the term Testament is the old word for Covenant, so when we read in the New Testament, we are really reading all about the New Covenant.) Jesus told His disciples that His death would usher it in, and His blood was “the New Covenant in my blood” (or “the blood of the New Covenant”). The Scriptures treat the New Covenant as a reality, not as an exercise in pretend or make-believe. (For more information, including an explanation of how this is seen in the New Testament, see the article The Nature of Salvation.)

Evidence, Please

Question: How can I know I have the new heart?

When writing to the church at Colosse, Paul said this:

Of this [hope] you have heard before in the word of the truth, the gospel, which has come to you, as indeed in the whole world it is bearing fruit and increasing—as it also does among you, since the day you heard it and understood the grace of God in truth, (Colossians 1:5–6, emphasis added)

Whatever else Paul is saying in this passage, he is saying one inescapable thing: the gospel (the New Covenant) always bears fruit and increasingly so. When one is saved and given the new heart, he or she is changed. Our lives are always producing fruit, whether good or bad. Jesus had something to say about that:

For no good tree bears bad fruit, nor again does a bad tree bear good fruit, for each tree is known by its own fruit. For figs are not gathered from thornbushes, nor are grapes picked from a bramble bush. The good person out of the good treasure of his heart produces good, and the evil person out of his evil treasure produces evil, for out of the abundance of the heart his mouth speaks. (Luke 6:43–45)

What does this mean for us who are saved? In short, it means that we will begin to produce fruit. Why? Because it’s now our nature to do so. Will we be perfect? No. Will we grow in love, holiness, and obedience? Absolutely. The first letter of John is all about this. The apostle John wrote this letter so that “you who believe in the name of the Son of God, that you may know that you have eternal life” (1 John 5:13). In this letter, he gives specific marks or signs of a believer. He says, “This is how you can tell a believer.” And the signs all come down to one thing: the fruit of a person’s life.

For the one saved, there will be evidence of the change–sometimes only small pieces of evidence, subtle changes at first. But they will be there.

What About This Sin?

Question: Why do I still struggle with sin?

This is another common question when learning about the New Covenant. A related question is, “Can a Christian live a perfectly sinless life?” Some teach that Christians who struggle with sin just aren’t trying hard enough or haven’t fully surrendered to God, or some variation of those things. Scripture, however, has a different perspective. We’ll start by looking at Romans 8.

There is therefore now no condemnation for those who are in Christ Jesus. For the law of the Spirit of life has set you free in Christ Jesus from the law of sin and death. For God has done what the law, weakened by the flesh, could not do. By sending his own Son in the likeness of sinful flesh and for sin, he condemned sin in the flesh, in order that the righteous requirement of the law might be fulfilled in us, who walk not according to the flesh but according to the Spirit. For those who live according to the flesh set their minds on the things of the flesh, but those who live according to the Spirit set their minds on the things of the Spirit. For to set the mind on the flesh is death, but to set the mind on the Spirit is life and peace. For the mind that is set on the flesh is hostile to God, for it does not submit to God’s law; indeed, it cannot. Those who are in the flesh cannot please God. You, however, are not in the flesh but in the Spirit, if in fact the Spirit of God dwells in you. Anyone who does not have the Spirit of Christ does not belong to him. But if Christ is in you, although the body is dead because of sin, the Spirit is life because of righteousness. If the Spirit of him who raised Jesus from the dead dwells in you, he who raised Christ Jesus from the dead will also give life to your mortal bodies through his Spirit who dwells in you. (Romans 8:1–11)  

In this passage, Paul is talking about what he calls the flesh. What do we know about the flesh? In short, we see that the flesh is hostile to God and cannot please God (vv. 7-8). Now, do we still have the flesh? Yes. Remember, Paul is writing to believers here. Notice he makes a distinction between being in the flesh and walking according to the flesh. He pointedly says to his readers, “You, however, are not in the flesh but in the Spirit, if in fact the Spirit of God dwells in you. Anyone who does not have the Spirit of Christ does not belong to him” (v. 9, emphasis added). 

However, he also says that it’s quite possible to “walk according to the flesh.” What does this mean? It means that we live in the same manner, with the same attitudes, as we did before we were saved. He defines walking according to the flesh as setting the mind on the things of the flesh. Likewise he defines living by the Spirit as setting the mind on the things of the Spirit (v. 5). Like the Sinful Heart, the flesh desires one thing–to find life through independence, apart from God and His ways.

I like to use the analogy of a mainframe computer connected to other computers. If a virus was to be implanted in the mainframe computer, it would systematically program the rest of the computers with that virus. This is what’s happened with fallen humanity. The Sinful Heart programmed every part of us to live independently of God. When one is saved, the old heart is removed and replaced by the Spiritual Heart (Ezek. 36:26). But, the other computers are not replaced. They have to be reprogrammed. 

This is where Paul’s words about “crucifying the flesh” in Romans 6 and renewing the mind (Romans 12) come in. Theologians call this process sanctification, but it really just means we are becoming more like Christ; we are living according to our new identity more and more and less and less like our old self. This is a lifelong process, Paul told the Philippians,

I am sure of this, that he who began a good work in you will bring it to completion at the day of Jesus Christ. (Philippians 1:6)

When will this work be completed? At the day of the return of Jesus Christ. Will it be completed? Absolutely. For those of us who have surrendered to Christ, we have God’s Word on that. No matter how much we stumble or how slowly we grow, we can be sure that He is walking with us and will finish what He started.

[For a more detailed look at these questions read the 5-part blog series How Then Shall We Live?]

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A Cure for the Incurable

And I will give you a new heart, and a new spirit I will put within you. And I will remove the heart of stone from your flesh and give you a heart of flesh. (Ezekiel 36:26)

In the last post (An Incurable Diagnosis, 2/18/2021), we saw the condition of fallen humanity. It was a grim discovery. To be blunt, the idea that humanity is basically good is a myth, which is supported by neither Scripture nor historical evidence. Humanity has, as we said in the last post, an incurably terminal disease–the disease of sin and self. Because of sin, every person is born with what we might call the Sinful Heart. 

The Sinful Heart, as we saw in the last post, is totally corrupted, and completely bent away from God. Its sole motivation is to find life apart from God and His ways. Because the heart is at the center of being, the Sinful Heart systematically programs every part of a person–mind, will, emotions, and body–in those same desires and strategies. And because every person is born with the Sinful Heart, the entire human race has been corrupted.

And this condition, according to the Lord, is terminal (leading to spiritual death) and incurable.

A Heart Transplant

It’s not enough to have a system of sacrifice in place. It’s not enough for people’s sins to be forgiven. It’s not enough to exhort people to obey the law. In order to save those doomed to separation from God, a radical solution is needed–a heart transplant. And that’s exactly what the Lord has provided. Let’s look at two passages that describe this transplant.

For this is the covenant that I will make with the house of Israel after those days, declares the LORD: I will put my law within them, and I will write it on their hearts. And I will be their God, and they shall be my people. And no longer shall each one teach his neighbor and each his brother, saying, ‘Know the LORD,’ for they shall all know me, from the least of them to the greatest, declares the LORD. For I will forgive their iniquity, and I will remember their sin no more.” (Jeremiah 31:33–34)

I will sprinkle clean water on you, and you shall be clean from all your uncleannesses, and from all your idols I will cleanse you. And I will give you a new heart, and a new spirit I will put within you. And I will remove the heart of stone from your flesh and give you a heart of flesh. And I will put my Spirit within you, and cause you to walk in my statutes and be careful to obey my rules. (Ezekiel 36:25–27)

When we take these two passages together, we get a full and complete picture of how deeply the Lord responded to the plight of the human race, even beyond the needed heart transplant.

Preparation for the Surgery

The first thing the Lord says to Ezekiel in this passage is, “I will sprinkle clean water on you, and you shall be clean from all your uncleannesses, and from all your idols I will cleanse you” (Ezek. 36:25). To prepare us for the heart transplant, the Lord first cleanses us. As part of that, He also told Jeremiah, “I will forgive their iniquity, and I will remember their sin no more” (Jer. 31:34). 

This is an important statement, since sins were not fully put away under the Old Testament sacrificial system. The author of Hebrews tells us,

[The law] can never, by the same sacrifices that are continually offered every year, make perfect those who draw near. Otherwise, would they not have ceased to be offered, since the worshipers, having once been cleansed, would no longer have any consciousness of sins? But in these sacrifices there is a reminder of sins every year. (Hebrews 10:1–3)

Instead of putting away sin, the sacrifices actually reminded people that they were still under sin. Their sin was covered, not forgiven. Yet, the Lord says He would not only forgive sin, but would “remember it no more.” So, under the New Covenant that the Lord is making, His people are now cleansed of sin and totally forgiven. There is no sin that cannot be forgiven and cleansed.

A New Heart

After preparing for surgery, it’s time to actually do the heart transplant. The Lord told Ezekiel, “I will give you a new heart, and a new spirit I will put within you. And I will remove the heart of stone from your flesh and give you a heart of flesh” (Ezek. 36:26). Let’s unpack this a little. If you’ll recall, the heart of fallen sinful man was compared to stone, on which sin had been written. This resulted in a heart totally corrupted, hostile to God’s ways and determined to find life apart from God. This heart could not be changed (hence the idea of sin being inscribed with iron and diamond). It must be replaced.

This new heart, according to the Lord will be a heart of flesh, instead of the heart of stone that resides within fallen humanity. What this means is that, instead of the Sinful Heart, then, His people would have the Spiritual Heart–a heart that is bent toward following the Lord and His ways, as much desiring to live in dependence on God as the Sinful Heart desired independence from Him.

But that’s not all; the Lord goes further. Not only does He replace the heart, but he says, “I will put my law within them, and I will write it on their hearts” (Jer. 31:33). Not only will His people  have a new heart, but that new heart is inscribed with the Law of the Lord (the direct opposite of Jer. 17:1, “[their] sin . . . is engraved on the tablet of their heart”).

A New Way to Relate

In addition to changing the very nature of His people, the Lord does something else. He gives us a new way of relating with Him. Look at these statements:

I will put my Spirit within you, and cause you to walk in my statutes and be careful to obey my rules.

They shall all know me, from the least of them to the greatest.

And I will be their God, and they shall be my people. 

These promises all boil down to one thing: intimacy with God. An intimacy that was unknown before. Yes, the Lord called Moses His servant and friend, and He called David a man after His own heart, and walked and talked with Abraham. But even they did not have the intimacy that he offers His people now. As part of the New Covenant, the very Spirit of God will reside in His people! All of His people will know Him, from the least to the greatest. There will be no distinction between priest and commoner. All will be priests. 

A Long-Awaited Answer

This is really the answer to the long-before prayer of King David. In Psalm 51, He prays:

Have mercy on me, O God, according to your steadfast love; according to your abundant mercy blot out my transgressions. Wash me thoroughly from my iniquity, and cleanse me from my sin. . . . Behold, you delight in truth in the inward being, and you teach me wisdom in the secret heart. Purge me with hyssop, and I shall be clean; wash me, and I shall be whiter than snow. . . . Hide your face from my sins, and blot out all my iniquities. Create in me a clean heart, O God, and renew a right spirit within me. Cast me not away from your presence, and take not your Holy Spirit from me. Restore to me the joy of your salvation, and uphold me with a willing spirit. (Psalm 51:1–12)

When we compare David’s prayer to the promises of the New Covenant, we find that God did fully and completely grant David’s plea. Likewise, those of us who have repented and cried out for mercy can rest assured that, as He did for David, as He promises to Israel, He will give us that same new heart and a willing spirit, in order that we will love, obey, and walk with Him. We have been made new, cleansed, and forgiven by the New Covenant sealed by Christ’s blood.

An Incurable Diagnosis

“The sin of Judah is written with a pen of iron; with a point of diamond it is engraved on the tablet of their heart, and on the horns of their altars, while their children remember their altars and their Asherim, beside every green tree and on the high hills, on the mountains in the open country. Your wealth and all your treasures I will give for spoil as the price of your high places for sin throughout all your territory. You shall loosen your hand from your heritage that I gave to you, and I will make you serve your enemies in a land that you do not know, for in my anger a fire is kindled that shall burn forever.” 

Thus says the LORD: “Cursed is the man who trusts in man and makes flesh his strength, whose heart turns away from the LORD. He is like a shrub in the desert, and shall not see any good come. He shall dwell in the parched places of the wilderness, in an uninhabited salt land. “Blessed is the man who trusts in the LORD, whose trust is the LORD. He is like a tree planted by water, that sends out its roots by the stream, and does not fear when heat comes, for its leaves remain green, and is not anxious in the year of drought, for it does not cease to bear fruit.” 

The heart is deceitful above all things, and desperately sick; who can understand it? “I the LORD search the heart and test the mind, to give every man according to his ways, according to the fruit of his deeds.” (Jeremiah 17:1–10)

Some time ago, we looked at Jeremiah 2:12-13, exposing the root of all sin as the desire to find independence and life apart from God (see Dying of Thirst, 9/16/2019). In this post, we are going to look at another part of Jeremiah that helps us understand why we need Jesus.

Many of us in the church are probably familiar with Jer. 17:9: “The heart is deceitful above all things, and desperately sick; who can understand it?” I have been for a long time. When one reads it in context, however, the reason for the problem becomes clear. We’re first going to look at that diagnosis and then look at the underlying cause.

The Diagnosis

Jeremiah diagnoses the human condition in verse 9. He writes, “The heart is deceitful above all things, and desperately sick; who can understand it?” The NIV translates this as, “The heart is deceitful above all things and beyond cure,” while the NET translates it as “incurably bad.” The idea in the original language is that 1) the human heart is deceitful to the core; and 2) this condition is incurable. 

Think about those statements; the human heart (in Jewish thinking, the center of being) is rotten to the core. It is self-centered and deceitful. This is the coup de grace of all viruses, illnesses, and diseases. Even worse than that is the fact that said condition is incurable. It is what we’d call a terminal disease. In today’s modern era, we will have diseases such as cancer for which we have no cure. Some of these diseases can cause death, hence the phrase terminal disease

Jeremiah’s diagnosis, though, is a terminal disease of staggering proportions. The disease of sin leads to spiritual death, or what the Bible calls eternal death–being eternally separated from God. And again, there is nothing we can do about it. Our best efforts simply aren’t good enough, because we aren’t good enough. Why is this? Now we turn to the cause.

The Root of the Problem

The root of this incurable problem is found in verses 1-3. The Lord, speaking through Jeremiah, tells us:

The sin of Judah is written with a pen of iron; with a point of diamond it is engraved on the tablet of their heart, and on the horns of their altars, while their children remember their altars and their Asherim, beside every green tree and on the high hills, on the mountains in the open country. (vv:1–3)

To understand the significance of the mention of “the tablet of their heart,” we need to remember that the Law of Moses was written on tablets of stone (Exodus 31:18; cf. 20:1-17). Here the Lord is displaying irony at the fact that the hearts of His people are as hard as a stone tablet, on which not the law of God, but their sin was engraved. It was engraved with such firmness that it can never be erased. As it was with Judah and Israel, so it is with all of fallen humanity. 

Now, it’s not only that individual sins were written on the tablet of their hearts, but also that sin itself was inscribed on their hearts. This gives a picture that the heart itself has been corrupted, and this is seen in how the NET translates vv. 2-3a: “Their children are always thinking about their altars and their sacred poles dedicated to the goddess Asherah, set up beside the green trees on the high hills and on the mountains and in the fields.” Here, we see that the people always have idolatry on their mind. 

In our day, many don’t think of actual gods and goddesses; rather they simply think about themselves–how they can find life apart from the Lord. Fallen humanity either creates ‘gods’ in their own image, or (for the more intellectual who shun religion), simply make themselves the god of their own life.

Because the heart itself is corrupted, everything else about fallen humanity has been corrupted–reasoning, choosing, feeling. Even the body often does not work as it was intended. Sin has corrupted everything about us.   

The Results of the Diagnosis

In verses 3b-4, the Lord tells Judah of the judgment to come as a result of their idolatry. He promises to give both their wealth and their land to others, and make them servants of foreigners. Why? He gives a straightforward answer: For in my anger a fire is kindled that shall burn forever (v. 4).

Then, however, the Lord makes a general statement, which we can see is the result of the incurably bad heart. The Lord first says that a certain type of person is cursed. He says, “Cursed is the man who trusts in man and makes flesh his strength, whose heart turns away from the Lord” (v. 5). Remember what we said about the root of all sin? It’s found in the foolish desire to find life and purpose independently of God. This verse describes such a person.

When one turns his heart away from the Lord, his only recourse is to turn to himself and others. He is trusting in flesh for what he needs and wants. The problem with this is that every fallen human being is primarily concerned with his or her own well-being. The Lord says that such a person is cursed. It’s not that the Lord is placing a curse on him or her. Rather, He is simply stating what will happen to this person.

In the next verse, the Lord says, “He is like a shrub in the desert, and shall not see any good come. He shall dwell in the parched places of the wilderness, in an uninhabited salt land” (v. 6). The Lord has drawn a picture of the fate of a person who trusts in himself. This person, the Lord says, will always be dry and unfulfilled. Now, wait, many people seem happy with wealth, power, status, etc. Right? They seem that way, but those things can never satisfy the deepest thirst of the human soul, and so they will always strive to seek after more. Those who have wealth, power, and status want more. They are truly never satisfied. Worse, the person described by the Lord uses whatever he or she can–including others–to get what he or she thinks will bring satisfaction (only to see it too lead to emptiness).

The Blessed Person

In contrast, the Lord says the one who trusts in Him will be blessed. Notice that He says what seems to be a repeating phrase: “. . . the man who trusts in the Lord, whose trust is the Lord” (v. 7). They really aren’t repeating phrases, though. There are two specific emphases here. The first phrase speaks of a person who “trusts in the Lord.” This is an active phrase, indicating that one intentionally places his or her trust in the Lord at specific times. The second phrase, “whose trust is the Lord,” indicates a state of being. This person has surrendered his or her life to the Lord, and so trust in the Lord is the default attitude of the heart.

This person, the Lord says, is like a tree by the river. Like the tree, the person has been rooted deeply and receives all he or she needs from the water. This is the inevitable result of trusting the Lord. Instead of constantly seeking satisfaction on his or her own terms, the blessed person has entrusted life itself to God and has found the true Satisfier. Notice that there is a further result:  Not only does this person receive all he or she needs, but is also said to “not cease to bear fruit [even in the year of drought].” In Scripture (particularly in the New Testament), the idea of fruit almost always has the idea of going forth and doing good to others. Because the blessed person has all he or she needs, attention can now be turned to others for their good.

But there’s a problem. Where do we find such a person? How can such a person exist since all have this incurable disease of sin, resulting in the foolish attempt to live independently of God? If sin itself is written on the tablet of the fallen heart, how can one be made to turn to God?

That is the beauty of the New Covenant…. which we will discuss in the next post.

The Armor of God

Finally, be strong in the Lord and in the strength of his might. Put on the whole armor of God, that you may be able to stand against the schemes of the devil. For we do not wrestle against flesh and blood, but against the rulers, against the authorities, against the cosmic powers over this present darkness, against the spiritual forces of evil in the heavenly places. Therefore take up the whole armor of God, that you may be able to withstand in the evil day, and having done all, to stand firm. Stand therefore, having fastened on the belt of truth, and having put on the breastplate of righteousness, and, as shoes for your feet, having put on the readiness given by the gospel of peace. In all circumstances take up the shield of faith, with which you can extinguish all the flaming darts of the evil one; and take the helmet of salvation, and the sword of the Spirit, which is the word of God, praying at all times in the Spirit, with all prayer and supplication. To that end, keep alert with all perseverance, making supplication for all the saints, (Ephesians 6:10–18)

Any believer who has read much of the New Testament has likely come across this passage. How does it apply to us today? Are we called to warfare? If so, what is the nature of the warfare? And how do we “stand” in the midst of the battle? These are the questions we’ll look at in this post. 

What Kind of Warfare?

No doubt the imagery of this passage is taken from the battle dress of a Roman soldier at the time. Paul may have gotten the idea from observing Roman soldiers during his time awaiting trial. The Scriptures are full of physical images/symbols to communicate spiritual truth, and this is no different.

To begin with, Paul makes it clear that we need armor to stand. To stand against what? To stand against “the schemes of the devil.” Thus, this automatically means that the battle we find ourselves in is spiritual. Paul further emphasizes this point when he says, “For we do not wrestle against flesh and blood, but against . . . the spiritual forces of evil in the heavenly places.” Since the battle we wage is not physical but spiritual we need spiritual weapons. In fact, Paul writes of our weapons,

For the weapons of our warfare are not of the flesh but have divine power to destroy strongholds. (2 Corinthians 10:4)

Therefore, we are engaged in a spiritual battle, and need spiritual weapons and armor. What is this armor, and how do we use it? That is the question. In describing the armor, Paul uses two different verb forms. For the first three items, he uses a form that’s rendered “having” done it. For the rest, we may render it, “Do this,” or “take up” this. The clear implication is that the first three are necessary in order for us to take up the other three.

Truth

Notice Paul begins in verse 15 with “Stand, therefore, having fastened . . . “ He is not telling us to do so. Instead, he is telling us that we can only stand when we have already done this. This must be the first step.  What is it that we are to fasten? Here is the full verse: “Stand therefore, having fastened on the belt of truth.” In the Greek, this is simply “having girded your waist with truth.” Paul’s reader’s would have understood what he meant; modern translations supply the image of a belt for clarity.

Why must we begin with truth, and how do we “fasten” it around us? Notice Paul doesn’t say that we are to know truth or accumulate knowledge of truth. No, he says that truth is to be that which binds everything else together. We are to be immersed in truth. One can make an argument here that he is referring to Christ, since He is “the way, the truth, and the life” (John 14:6). We are to not only be immersed in truth, but we must first surrender to the truth. We must surrender to Christ.

Righteousness

Pau uses similar language for the next piece of armor. He says, “. . . and having put on the breastplate of righteousness.” This is something else that must be in place before the believer can stand. It is what we might call a prerequisite or a basic requirement. Righteousness is not a series of acts but a state of being. Since Paul speaks of “the breastplate of righteousness,” it’s clear he means that our right standing before God is a matter of the heart and also protects our heart.

Elsewhere he speaks of “the breastplate of faith and love” (1 Thessalonians 5:8), and thus links righteousness to faith and love. As throughout Scripture, righteousness comes by faith (Galatians 3:11; also see Romans 3-4 for a fuller explanation). How are we made righteous? By surrendering to Christ, the Truth (as we saw above). Only by trusting in Him and the work He accomplished for us can one be made righteous.

The Gospel of Peace

The third “having” statement Paul gives us is “having put on the readiness given by the gospel of peace” (v. 15). He likens this to shoes on the feet. There are two possible meanings of this. First, one who has surrendered to Christ is to be “ready” to preach the gospel (hence “the readiness”). It is natural for a new believer to want to share the amazing story of salvation. 

Secondly, the term can also mean “footing” or “foundation.” Shoes can be seen as the foundation upon which walks. Thus, the gospel itself becomes the foundation for one’s life, faith, and practice. This is the preferred meaning since it fits well into the context of standing firm. In addition, Paul’s words, “the gospel of peace,” directly link it to Philippians 4:6-7, where he says, “And the peace of God . . . will guard your hearts and your minds.”

Take Up the Armor

Beginning in verse 16, Paul tells us to actively “take up” the rest. This is an act that we are responsible for doing. Even if we have surrendered to Christ and have the gospel as our foundation, if we fail to do this, we will not be able to stand. The remaining things we are to take hold of and use are:

The Shield of Faith

It’s no accident that Paul places this first on the list of things we are to take up. The shield protects the heart, and likewise our faith in Christ protects our heart. The apostle John wrote about this protection: 

By this we shall know that we are of the truth and reassure our heart before him; for whenever our heart condemns us, God is greater than our heart, and he knows everything. Beloved, if our heart does not condemn us, we have confidence before God; and whatever we ask we receive from him, because we keep his commandments and do what pleases him. (1 John 3:19–22)

Faith, it must be remembered, is not faith “in faith.” We must first have that foundation that Paul talks about in verses 14-15. We must have surrendered to Christ. Otherwise, there is no basis for our faith, and it’s no better than the seven sons of Sceva in Acts 19.

The Helmet of Salvation

One might wonder why Paul includes this here, since he has already dealt with salvation in verses 14-15. One cannot hope to stand unless he or she is saved, right? Right. The helmet protects the head. Spiritually speaking, the helmet of salvation protects the mind. As those who have been saved, we not only have “the mind of Christ” (1 Corinthians 2:16), but we still have the flesh–that part of us that seeks to live independently of God.

We are therefore called to renew our minds (Romans 12:2). At the core of this renewal is remembering the simple fact that, “I am new in Christ; I don’t have to live that way anymore.” As we focus on our salvation, our minds can be renewed, and this helps keep us on His path.

The Sword of the Spirit

The last item Paul tells us to take up is “the sword of the Spirit.” He defines this as “the word of God.” To his readers, that would have not only meant the existing Scriptures, but also the indwelling Holy Spirit, whose function is to “teach you all things and bring to your remembrance all that I have said to you” (John 14:26). When Jesus was tempted in the wilderness, this is how He fought temptation–by using God’s Word.

In order to effectively use God’s Word, however, we must be intentional about studying and knowing it. I don’t mean just memorizing it, but letting it penetrate deep within us. This is why a regular habit of Bible reading and study is essential in the life of a believer.

One more thing should be noted. Paul closes this section by adding, “. . . praying at all times in the Spirit, with all prayer and supplication. To that end, keep alert with all perseverance, making supplication for all the saints” (v. 18). Some see this as different than taking up the sword of the Spirit. However, Paul links this directly to using our sword. Thus, our prayers must come from what we know in God’s Word. When we pray for people and situations, we must have an idea of how to pray, and God’s Word teaches us how we are to pray. 

We are to “stay alert” in this attitude of prayer, much as a soldier would keep watch on the wall at night. We must never separate the sword of the Spirit and our prayer. The place we take up the sword of the Spirit is on the battleground of prayer. 

As we consistently and consciously take up God’s armor, we will see that we grow and mature in love, obedience, holiness, and victory over temptation.