3 For what the Law could not do, weak as it was through the flesh, God did: sending His own Son in the likeness of sinful flesh and as an offering for sin, He condemned sin in the flesh, 4 so that the requirement of the Law might be fulfilled in us, who do not walk according to the flesh but according to the Spirit (Romans 8).
The Law is no stronger than any flesh trying to fulfill it. Like a mirror, the Law cannot do anything but reflect what is there. It cannot make the face looking at it any more handsome or beautiful. Even more, inasmuch as a mirror cannot do anything to cure a malignant cancer killing the body, so can the Law not do anything to change a sinful heart killing the soul. The Law is indeed weak (literally, “without strength,” thus powerless), for the heart cannot be changed without it first being killed.
Thus came Christ to die both as the bearer of sin as well as payment for it, that we might die along with Him and then be born again to walk — not “according to the flesh,” trying to fulfill the requirements of the Law — but “according to the Spirit” who is changing our hearts so that we are becoming more and more of a mirror image of Christ Himself.
Lord, thank You for this transformation in our souls so that the Law no longer condemns us! Thank You for making us more and more like Jesus! Help us This Day indeed to walk according to Your Spirit living within us, and thus to reflect the image of Your Son. Amen.