The idea we are not under law but under grace is being interpreted to mean that righteous behavior, while it is desirable or shows we love Jesus, is not an essential aspect of our salvation. We are saved by grace (forgiveness and mercy) alone, it is maintained, and not by righteous behavior.
What is the relationship of the Law of Moses to the redemption that is in Christ? The answer to this question is important to the dedicated Christian. Whenever a question arises concerning a commandment of the Old Testament, our standard response as believers often is, we are not under the Law of Moses but under grace. One wonders if we really understand what we are saying.
We cannot mean the Torah, the Law, has been abolished, for the new covenant is the writing of the spiritual intent of the Torah on our mind and heart. This hardly is an abolishing of the Torah in the sense of doing away with the moral laws of God!
Paul’s argument against the Law of Moses has been understood by Gentiles to be an argument against righteous and holy behavior. It is as though we are saved apart from righteous and holy behavior, when in fact righteous and holy behavior are salvation and proof of the Kingdom of God in our life. It is an enormous and deadly misunderstanding!