When you only rely on yourself, on your own conclusions and on what you want to do, even if you know that it goes against the Word of God, then you are living in rebellion against God – and then evil is waiting around the corner. When your rebellion becomes strong enough – which it will if you don’t repent – then, whether you want to believe it or not, it will end up generating the same powers that rebellion brought about in Saul’s life: witchcraft and idol worship. Rebellion is witchcraft and idol worship is the admiration of your own ego, the biggest of all the idols.