What the law could not do, weakened as it was by the flesh, God did: he sent his own Son in the likeness of sinful flesh, and to deal with sin, and he passed sentence on sin in the flesh,
In context
1So there is now no condemnation for those who are in Christ Jesus. 2For in Christ Jesus the law of the Spirit of life has set you free from the law of sin and death. 3What the law could not do, weakened as it was by the flesh, God did: he sent his own Son in the likeness of sinful flesh, and to deal with sin, and he passed sentence on sin in the flesh, 4so that the just requirement of the law might be fulfilled in us, who walk not according to the flesh but according to the Spirit. 5Those who live according to the flesh set their minds on what the flesh wants; those who live according to the Spirit, on what the Spirit wants.
