King James Version
But God be thanked, that ye were the servants of sin, but ye have obeyed from the heart that form of doctrine which was delivered you.New International Version
But thanks be to God that, though you used to be slaves to sin, you wholeheartedly obeyed the form of teaching to which you were entrusted.Catholic Public Domain Version
But thanks be to God that, though you used to be the servants of sin, now you have been obedient from the heart to the very form of the doctrine into which you have been received