Moe Bergeron

There is a fundamental distinction between living under the authority of Israel’s Law and living under the authority of grace, a distinction that defines the very nature of the New Covenant life. Under the Law, the believer is like a child under a strict guardian, driven by the fear of punishment and the impossible burden of self-justification. Under grace, the believer is a son or daughter, empowered by the indwelling Spirit to fulfill the righteous requirement of the Law not through external compulsion, but through internal transformation. This is the great shift from “doing to be accepted” to “being accepted, therefore doing.” To “keep in step with the Spirit” is to abandon the old rhythm of legalistic striving and enter the new rhythm of responsive obedience, where the power to please God flows from a heart that has already been made new.

Galatians 5:16–18

So I say, walk by the Spirit, and you will not gratify the desires of the flesh. For the flesh desires what is contrary to the Spirit, and the Spirit what is contrary to the flesh. They are in conflict with each other, so that you are not to do whatever you want. But if you are led by the Spirit, you are not under the law. 

Romans 8:1–4

There is therefore now no condemnation for those who are in Christ Jesus, because the law of the Spirit of life has set you free in Christ Jesus from the law of sin and death. For what the law was powerless to do because it was weakened by the flesh, God did by sending his own Son in the likeness of sinful flesh to be a sin offering. And so he condemned sin in the flesh, in order that the righteous requirement of the law might be fully met in us, who do not live according to the flesh but according to the Spirit.

The apostle Paul draws a sharp line between two systems of existence: the old covenant of the letter, which condemns, and the new covenant of the Spirit, which gives life. The Law, though holy and good, was powerless to transform the human heart; it could only reveal sin and pronounce judgment. Grace, however, does not merely forgive the sinner; it resurrects the sinner into a new life where the Spirit writes the law on the heart. To “keep in step” (or “walk”) with the Spirit is to live in the dynamic reality of this new power. It is not a passive state but an active, moment-by-moment reliance on the Holy Spirit to produce the fruit of righteousness that the Law demanded but could not generate.

Galatians 5:16–17 — So I say, walk by the Spirit, and you will not gratify the desires of the flesh. For the flesh desires what is contrary to the Spirit, and the Spirit what is contrary to the flesh. They are in conflict with each other, so that you are not to do whatever you want.
The command to “walk by the Spirit” implies a continuous, habitual dependence. It is not a one-time decision but a daily rhythm. The “flesh” here refers not merely to the physical body but to the fallen human nature that operates independently of God. The conflict Paul describes is the internal war of the believer: the old nature pulls toward self-gratification, while the new nature, animated by the Spirit, pulls toward God. The phrase “so that you are not to do whatever you want” highlights that the believer is no longer a slave to their impulses. Under the Law, the flesh would rebel against the command; under grace, the Spirit empowers the will to resist. The victory is not achieved by gritting one’s teeth to obey a rule, but by yielding to the Spirit who produces the desire to obey.

Galatians 5:18 — But if you are led by the Spirit, you are not under the law.
This is the pivotal statement. Being “under the law” means being under its curse, its condemnation, and its inability to save. To be “led by the Spirit” is to be under a different authority—the authority of grace. The Spirit does not lead us back to the yoke of legalism; He leads us forward into the freedom of sonship. When we are led by the Spirit, we are not motivated by the fear of breaking a rule, but by the love of the Father and the power of the Son. The Law says, “Do this and live”; the Spirit says, “You are alive, therefore do this.” The motivation shifts from external coercion to internal conviction. The believer is free from the Law’s condemnation because Christ has satisfied its demands, and free from the Law’s powerlessness because the Spirit provides the strength to fulfill them.

Romans 8:1–2 — There is therefore now no condemnation for those who are in Christ Jesus, because the law of the Spirit of life has set you free in Christ Jesus from the law of sin and death.
Paul contrasts two “laws”: the “law of sin and death” (the inevitable trajectory of the fallen nature under the Law) and the “law of the Spirit of life” (the new governing principle of the redeemed). The result of being in Christ is “no condemnation.” This is the foundation of the New Covenant life. Under the Law, every failure resulted in a verdict of guilty. Under grace, every failure is met with the advocacy of Christ and the restoring power of the Spirit. The “law of the Spirit of life” is not a new set of rules, but a new power dynamic. It is the life-giving breath of God that raises the dead heart and enables it to walk in righteousness.

Romans 8:3–4 — For what the law was powerless to do because it was weakened by the flesh, God did by sending his own Son in the likeness of sinful flesh to be a sin offering. And so he condemned sin in the flesh, in order that the righteous requirement of the law might be fully met in us, who do not live according to the flesh but according to the Spirit.
Here, Paul explains the mechanism of this transformation. The Law failed because it was external and the flesh was weak. God solved this by sending His Son to deal with sin decisively (“condemned sin in the flesh”). The purpose of this act was not to abolish the moral standard of God, but to enable us to meet it. The “righteous requirement of the law” is not lowered; it is fulfilled. But it is fulfilled “in us” not by our own effort, but by our living “according to the Spirit.” The Spirit takes the external demands of the Law and internalizes them, producing a life of obedience that flows from a regenerated heart. The believer does not keep the Law to be saved; the believer keeps the Law because they are saved and the Spirit is at work within them.

For the believer today, the difference between living under the Law and living under grace (the New Covenant Ministry of the Spirit, 2 Cor 3) is the difference between a life of exhaustion and a life of joy. When we try to keep in step with the Law by our own strength, we inevitably stumble, leading to guilt and shame. But when we learn to walk by the Spirit, we find that the burden is light. We do not have to strive to be holy; we simply have to stay connected to the Vine. The practical application is to catch ourselves in moments of temptation or failure and immediately turn to the Spirit, saying, “Lord, I cannot do this on my own. Fill me with Your power.” We must stop looking at the rulebook and start looking at the Savior. As we yield to the Spirit, the fruit of the Spirit—love, joy, peace, patience, kindness, goodness, faithfulness, gentleness, and self-control—will naturally grow. This is the life of grace: not a license to sin, but a liberation to love.