Romans 7:23 - 8:1-2 7:25 "I thank God through Jesus Christ our Lord. So then with the mind I myself serve the law of God; but with the flesh the law of sin." 8:1 "There is therefore now no condemnation to them which are in Christ Jesus, who walk not after the flesh, but after the Spirit." So is it possible for a Christian to still be walking after the flesh: YES (if not after the Spirit). 7:25 Paul says, with the mind I myself serve the law of God; but with the flesh the law of sin. "the mind" in v25 is not the human mind otherwise it is flesh, rather the Holy Spirit (the mind of Christ given to a believer) Romans 8:8-9, 1 Corinthians 2:12-16. Referencing[*] 1 Corinthians 2:12-16 2:16, "For who hath known the mind of the Lord, that he may instruct him? But we have the mind of Christ." Jesus said in Matthew 11:27; "All things are delivered unto me of my Father: and no man knoweth the Son, but the Father; neither knoweth a
