I Samuel 13

11 And Samuel said, "What have you done?"

Saul said, "When I saw that the people were scattered from me, and that you did not come within the days appointed, and that the Philistines gathered together at Michmash, 12 then I said, ‘The Philistines will now come down on me at Gilgal, and I have not made supplication to the Lord.’ Therefore I felt compelled, and offered a burnt offering."