Samuel came no more to see Saul until the day of his death; for Samuel mourned for Saul: and Yahweh repented that he had made Saul king over Israel.
Now he has shown a pattern of disobedience up to this point. He has become self-willed, doing his own thing. So the prophet is coming and warning him. This to me is very significant, because God does seek to warn us from our self-willed path of destruction. God doesn't just let you trip off into the path of destruction, without coming and giving you fair warning, oftentimes, repeated warnings.