1 Samuel 13:11-14

but Samuel said, “What is this you have done?” Saul replied, “I saw my men scattering from me, and you didn’t arrive when you said you would, and the Philistines are at Micmash ready for battle. So I said, ‘The Philistines are ready to march against us at Gilgal, and I haven’t even asked for the LORD’s help!’ So I felt compelled to offer the burnt offering myself before you came.” “How foolish!” Samuel exclaimed. “You have not kept the command the LORD your God gave you. Had you kept it, the LORD would have established your kingdom over Israel forever. But now your kingdom must end, for the LORD has sought out a man after his own heart. The LORD has already appointed him to be the leader of his people, because you have not kept the LORD’s command.”