Parallel
Romans 6:17
Nestle 1904 Greek New Testament · Berean Standard Bible
χάρις δὲ τῷ Θεῷ ὅτι ἦτε δοῦλοι τῆς ἁμαρτίας ὑπηκούσατε δὲ ἐκ καρδίας εἰς ὃν παρεδόθητε τύπον διδαχῆς
But thanks be to God that, though you once were slaves to sin, you wholeheartedly obeyed the form of teaching to which you were committed.