The natural man lacks peace with God. We all come into the world fighting against God, because we are a part of the rebellion that started with Adam and Eve. Romans 5:10 says we were enemies of God. We fought against God, and everything we did militated against His principles.
But when we receive Jesus Christ, we cease being enemies of God—we make a truce with Him. We come over to His side, and the hostility is ended. Jesus Christ wrote the treaty with the blood of His cross. That treaty, that bond, that covenant of peace declares the objective fact that we now are at peace with Him.
That’s what Paul means in Ephesians 6:15, when he calls the good news of salvation “the preparation of the gospel of peace.” The gospel is that which makes a man who was at war with God to be at peace with Him. This peace is objective—that is, it has nothing to do with how we feel or what we think. It is an accomplished fact.
Romans 5:1 says, “Therefore, having been justified by faith, we have peace with God.” We who trust Christ are redeemed and declared righteous by faith. Our sins are forgiven, rebellion ceases, the war is over, and we have peace with God. That was God’s wonderful purpose in salvation.
Colossians 1:20-22 says that Christ “made peace through the blood of His cross…. And although you were formerly alienated and hostile in mind, engaged in evil deeds, yet He has now reconciled you in His fleshly body through death, in order to present you before Him holy and blameless and beyond reproach.”
A sinful, vile, wicked person cannot come into the presence of a holy God. Something must make that unholy person righteous before he can be at peace with God. And that’s exactly what Christ did, dying for sin, imputing His righteousness to sinners. So Paul says we are no longer enemies but are at peace because we are reconciled.
It is as if God were on one side, we were on the other side, then Christ filled the gap, taking the hand of God and the hand of man and placing them together into the same grip. We have now been brought together through the blood of the cross of Jesus Christ.
Whereas God and man were once estranged, they have now been reconciled. That is the heart of the gospel message, as Paul says in 2 Corinthians 5:18-19. But Jesus is not talking about objective peace in John 14:27. The peace He speaks of here is a subjective, experiential peace. It is tranquility of the soul, a settled, positive peace that affects the circumstances of life. It is peace that is aggressive; rather than being victimized by events, it attacks them and gobbles them up. It is a supernatural, permanent, positive, no-side-effects, divine tranquilizer. This peace is the heart’s calm after Calvary’s storm. It is the firm conviction that He who spared not His own Son will also along with Him freely give us all things (cf. Romans 8:32).
This is the peace that Paul speaks about in Philippians 4:7: “And the peace of God, which surpasses all comprehension, shall guard your hearts and your minds in Christ Jesus.” The peace of God is not based on circumstances like the world’s peace, so it doesn’t always make sense to the carnal mind; Paul says it is a peace that surpasses comprehension. It doesn’t seem reasonable that such peace could exist in the midst of the problems and troubles Christians go through. But this is divine, supernatural peace; it cannot be figured out on a human level.