1 Samuel 13

11 Then Samuel said, What hast thou done? And Saul said, Because I saw that the people were leaving me and that thou didst not come within the days appointed and that the Philistines gathered themselves together at Michmash,

12 therefore, I said, The Philistines will come down now upon me to Gilgal, and I have not made supplication unto the Lord. I forced myself, therefore, and offered a burnt offering.