It repents me that I have set up Saul to be king; for he is turned back from following me, and has not performed my commandments. Samuel was angry; and he cried to Yahweh all night.
In other words, if you're rebelling against God, that's just as bad as if you were into witchcraft. If you have a stubborn spirit, you're no better off than the person who is worshiping an idol. This business of rebellion and stubbornness is something that God is not pleased with in our lives. Rebellion is just as bad as witchcraft. Stubbornness is just as bad as idolatry.