for what the law was not able to do, in that it was weak through the flesh, God, His own Son having sent in the likeness of sinful flesh, and for sin,
did condemn the sin in the flesh, [dative, if relative] Rom 8:3
because also Christ once for sin did suffer -- righteous for unrighteous -- that he might lead us to God,
having been put to death indeed, in the flesh [dative, if relative], and having been made alive in the spirit, 1 Peter 3:18
I think my question to the OP is Rom 8:3 begins by saying there is
condemnation to those in Christ Jesus yet
the sin was
condemned in the flesh of Christ. Isn't the word condemn penal in nature?
@JonC