Parallel
Romans 6:20
Nestle 1904 Greek New Testament · Berean Standard Bible
Ὅτε γὰρ δοῦλοι ἦτε τῆς ἁμαρτίας ἐλεύθεροι ἦτε τῇ δικαιοσύνῃ
For when you were slaves to sin, you were free of obligation to righteousness.