I think this group of verses when taken together and of course digging into the context, paints a picture for us.
Some might see contradiction, but I don't.
Rom. 6:19 (NAS20S) I am speaking in human terms because of the weakness of your flesh. For just as you presented the parts of your body as slaves to impurity and to lawlessness, resulting in further lawlessness, so now present your body’s parts as slaves to righteousness, resulting in sanctification.
Rom. 6:22 (NAS20S) But now having been freed from sin and enslaved to God, you derive your benefit, resulting in sanctification, and the outcome, eternal life.
1Cor. 1:30 (NAS20S) But it is due to Him that you are in Christ Jesus, who became to us wisdom from God, and righteousness and sanctification, and redemption,
1Th. 4:3 (NAS20S) For this is the will of God, your sanctification; that is, that you abstain from sexual immorality; 4 that each of you know how to possess his own vessel in sanctification and honor,