They went out from us, but they didn't belong to us; for if they had belonged to us, they would have continued with us. But they left, that they might be revealed that none of them belong to us.
Now there are many Jewish people today who say, "Well, we just pray to God. We don't need Jesus." Well then, I don't know to which god they are praying to. Because the God, even of their own Old Testament, required that before they could come to Him they had to offer a sacrifice and get rid of the sins, by the animal sacrifice. "Oh well, I just come to God with my good works, and I just believe that God accepts me because of my good works and my sincerity." Well, your god may, but he is not the god who is revealed in the Bible, because He said your works are like filthy rags in His sight. He has no interest in your works. The just shall live by faith, and not faith in your works, but faith in His work.