1 Samuel 13:11-14

Samuel said, “What on earth are you doing?” Saul answered, “When I saw I was losing my army from under me, and that you hadn’t come when you said you would, and that the Philistines were poised at Micmash, I said, ‘The Philistines are about to come down on me in Gilgal, and I haven’t yet come before GOD asking for his help.’ So I took things into my own hands, and sacrificed the burnt offering.” “That was a fool thing to do,” Samuel said to Saul. “If you had kept the appointment that your GOD commanded, by now GOD would have set a firm and lasting foundation under your kingly rule over Israel. As it is, your kingly rule is already falling to pieces. GOD is out looking for your replacement right now. This time he’ll do the choosing. When he finds him, he’ll appoint him leader of his people. And all because you didn’t keep your appointment with GOD!”