In fact, he goes on and says, “On the contrary, we establish the Law.” This is remarkable. He turns the table on his critics. He says, “Not only do we not nullify the Law when we teach justification by faith alone apart from works of the Law, but we establish the Law when we teach this. Justification by faith alone, apart from works of the Law, does not knock the Law down, it stands the Law up. Getting right with God by faith, not works, establishes the Law.
Now what does that mean? I think it means that what the moral law of God requires of us, we will do, if we pursue it by faith, as those who are already justified, and not by works, in order to be justified. If we get right with God first by faith alone, and then live in that freedom of love and acceptance and justification, we will be changed from the inside out and will begin to love the very things the moral law requires so that they become established in our lives – not as works of merit, but as the fruit of faith (I Thessalonians 1:3; 2 Thessalonians 1:11) and the fruit of the Spirit.