Parallel
Romans 6:20
Robinson-Pierpont Byzantine Textform · 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.