One of the many things consistent through the whole Bible, Old and New Testaments, is that God is deeply concerned with the state of His people’s hearts. As early as the flood, “it grieved Him in His heart” to see “that the wickedness of man was great in the earth, and that every imagination of the thoughts of man’s heart was continually only evil” (Gen. 6:5-6, WEB). The heart-state of mankind didn’t get much better as the years went on. Later, of ancient Israel, God said, “Oh that there were such a heart in them that they would fear me and keep all my commandments always, that it might be well with them and with their children forever!” (Deut. 5:29,WEB). He’s longed for a heart-level relationship with people since He created us, but for centuries our hearts weren’t in it.
One of the big promises about the New Covenant was that God said to His people, “I will also give you a new heart, and I will put a new spirit within you. I will take away the stony heart out of your flesh, and I will give you a heart of flesh” (Eze. 36:26, WEB). The author of Hebrews talks about this happening in us today as God writes His laws on our hearts because of Jesus mediating the New Covenant (Heb. 8:6-11; 10:14-16). Interestingly, this discussion of new hearts and new spirits is deeply connected to the change in how New Covenant believers relate to the law of God compared to Old Covenant believers.

The Whole Inner Person
We often think of the mind as associated with thought and the heart only being emotion, but in Hebrew the heart symbolized all of a person’s inner workings. While leb has the same concrete meanings that it does in English, it is also “the richest biblical term for the totality of man’s inner or immaterial nature” (Theological Wordbook of the Old Testament [TWOT], entry 1071a). This includes the personality and mind, with leb standing for “emotion, thought, or will” (TWOT).
That has some interesting implications for how we interpret key Biblical passages. Take this one, for example: “The heart is deceitful above all things and it is exceedingly corrupt” (Jer. 17:9, WEB). This does not, as I’ve heard some say, simply mean you can’t trust your emotions or “follow your heart” in the modern sense of the phrase. It means humanity’s whole inner nature–both emotions and thought–is corrupt. At least, it’s that way until our hearts are healed and transformed by God.
“I will give them one heart, and I will put a new spirit within you. I will take the stony heart out of their flesh, and will give them a heart of flesh; that they may walk in my statutes, and keep my ordinances, and do them. They will be my people, and I will be their God.”
Ezekiel 11:19-20, WEB
We need a “heart transplant” to make us more like our heavenly father. Remember in Deuteronomy, when God said, “Oh that there were such a heart in them that they would fear me and keep all my commandments always”? When He established the New Covenant, it included a way to fix that heart problem. And because there’s a change in our hearts–our entire internal makeup changing from human and fleshy to godly and spiritual–the way we interact with God and His way of life changes as well.
“It’s one thing to do good because we’re told it’s good and therefore we obey. It’s quite another to do good because we’re good deep down inside and goodness is what naturally flows out. That’s the new heart we’re promised and the new nature we’re given by God’s spirit.”
Chis Tiegreen, One Year Hearing His Voice devotional, Day 29
I came across this quote in my devotional for this year, and it’s what prompted me to write this post. The topic of God working in us and changing us is one we talk about often, but I liked the idea of looking at it from this perspective. It helps us understand a lot of the New Testament writers’ perspectives when we think of this change in heart involving a change in our inner nature. The goal is to become perfect like our “heavenly Father is perfect” (Matt. 5:48. NET). When that happens, we’ll be good inside the way that God is good.

Paul’s Struggle With the Carnal Heart
Of course, the process of becoming perfect like God doesn’t happen all at once. It doesn’t even fully happen in any human lifetime. Jesus authors or begins our faith and He is in the process of working with us to bring it to completion, but that won’t be fully realized until His return and our change from flesh to spirit (Heb. 12:2; 1 Cor. 15:42-53). But we get to begin that change now, and that’s something Paul talks about in several of his letters, particularly Romans and Galatians.
In Romans, Paul talks about how we needed the law “when we were in the flesh” with active “sinful desires” because the law lets us know what sin is and the grave consequences of it (Rom. 7:1-12). Now, though, we have “died to the law through the body of Christ, so that you could be joined to another, to the one who was raised from the dead, to bear fruit to God” (Rom. 7:4, NET). Now, if we stopped there, we might conclude there’s no law now under the New Covenant because we have Jesus and we don’t need anything else. But Jesus Himself said He wasn’t here to destroy the law but to fulfill it (i.e. to fill it up to its fullest extent). Paul’s actually talking about a struggle here between the flesh, which needs to obey God’s law, and the spirit, which should just be good because it’s like God.
So then, the law is holy, and the commandment is holy, righteous, and good. Did that which is good, then, become death to me? Absolutely not! But sin, so that it would be shown to be sin, produced death in me through what is good, so that through the commandment sin would become utterly sinful. For we know that the law is spiritual—but I am unspiritual, sold into slavery to sin. For I don’t understand what I am doing. For I do not do what I want—instead, I do what I hate. But if I do what I don’t want, I agree that the law is good. But now it is no longer me doing it, but sin that lives in me. For I know that nothing good lives in me, that is, in my flesh. For I want to do the good, but I cannot do it. For I do not do the good I want, but I do the very evil I do not want! Now if I do what I do not want, it is no longer me doing it but sin that lives in me.
Romans 7:12-20, NET
Paul is talking about the same problem that God identified with so many people in the Old Testament. Their hearts are corrupt, they are “unspiritual, sold into slavery to sin.” They might even agree that the law is good, but when “nothing good lives in” your “flesh” then you’re not going to be truly good even if you obey the law most of the time. As Paul said earlier in Romans, “all have sinned and fall short of the glory of God” (Rom. 3:23, NET).
So, I find the law that when I want to do good, evil is present with me. For I delight in the law of God in my inner being. But I see a different law in my members waging war against the law of my mind and making me captive to the law of sin that is in my members. Wretched man that I am! Who will rescue me from this body of death? Thanks be to God through Jesus Christ our Lord! So then, I myself serve the law of God with my mind, but with my flesh I serve the law of sin.
There is therefore now no condemnation for those who are in Christ Jesus. For the law of the life-giving Spirit in Christ Jesus has set you free from the law of sin and death. For God achieved what the law could not do because it was weakened through the flesh. By sending his own Son in the likeness of sinful flesh and concerning sin, he condemned sin in the flesh, so that the righteous requirement of the law may be fulfilled in us, who do not walk according to the flesh but according to the Spirit.
Romans 7:21-8:4, NET
Now we see Paul discussing God’s solution to the problem. Through the redemptive work of Jesus Christ, the Lord is transforming us so we can walk “according to the Spirit” instead of “according to the flesh.” In other words, He’s replacing our heart of stone and giving us a heart like His. Circling back to the Tiegreen quote about obeying because we’re told to do good vs obeying because we are good, I think Paul’s statement, “I myself serve the law of God with my mind, but with my flesh I serve the law of sin” applies. The part of Paul being transformed and made perfect has God’s law written on his heart; he serves God in the spirit and doesn’t need an external law to make him fulfill “the righteous requirement of the law.” But the part of Paul that’s still human needs that “law of sin” (i.e. God’s law that pointed out what sin is and condemns it) to show him the difference between right and wrong.
Working With God to Build Relationship

Because of the heart-work that God is doing in us, we can choose to “live by the Spirit and … not carry out the desires of the flesh” (Gal. 5:16, NET). In this passage in Galatians, Paul then goes on to detail the “works of the flesh” (sins) and the “fruit of the spirit” (godly character) so we can make sure we’re on the right track (Gal. 5:16-6:8). Remember, we’re still not perfect yet. While we can trust our hearts more and more as they’re transformed by God (see 1 John 3:21), we still need to examine ourselves and ask for God’s perspective on us to make sure we’re not getting off-track (1 Cor. 11:28-32; 2 Cor 13:5-6).
So then, my dear friends, just as you have always obeyed, not only in my presence but even more in my absence, continue working out your salvation with awe and reverence, for the one bringing forth in you both the desire and the effort—for the sake of his good pleasure—is God.
Philippians 2:12-13, NET
God invites us to work with Him on transforming our hearts. We get to work on our salvation as He’s working in us. We even get to participate in purifying our hearts (Jas. 4:8). It’s part of the relationship He longs to build with us. If He just did everything for us–or if we could do everything on our own–we wouldn’t be building relationships with Him. And that’s His ultimate goal: to grow the God-family by welcoming new family members into the oneness that the Father and Jesus already share. The “heart transplant” He offers us is just one step toward that goal.
Featured image by Photo Mix from Pixabay
Song Recommendation: “Heartbeat of Heaven” by Jean Watson


















