"GOD, sending His own Son in the likeness of sinful flesh, and for sin, condemned sin in the flesh" (Rom. 8:3). ROM 8:3Grace is the wondrous love of God in saving man, when a sinner, by the death of His only begotten Son. Man had been responsible for fulfilling the law, and man must obey; man had sinned, and man must he made a curse; therefore the Son of God became man. God sent forth His Son, made of a woman; not in sinful flesh, but in the likeness of sinful flesh; thus the holy and just One could fulfill and suffer, in the stead of the unjust and unholy, so as to bring us to God. Thus the grace of God brings salvation to the chief of sinners. Sin having been condemned in the flesh by the cross of Christ, God can justly pardon the sinner; and the Righteous One having fully obeyed unto death for us who believe, we are " made the righteousness of God in Him "(2 Cor. 5:21). 2 COR 5:21
Thus we see that grace was manifested in the cross, by God condemning our sin in His own Son, and making us righteous in Him Whom He raised from the dead, thus doing what the law could not do. The work of Christ's cross, then, is the ground of our peace and confidence in God. It is in the cross we see that God is “the God of all grace," and that Christ's death is the ground of our life and peace (see Gal. 2:20). GAL 2:20