For when you were the servants of sin, you were free from righteousness.
All Commentaries on Romans 6:20 Go To Romans 6
John Chrysostom
AD 407
In the past you did not split your service between righteousness and sin but were wholly given over to sin. So now that you have come over to the side of righteousness, you should do the same thing and give yourselves over entirely to righteousness, doing nothing at all that is wicked.