1 Samuel 13:11-13

11And Samuel said, What hast thou done? And Saul said, Because I saw that the people were scattered from me, and that thou camest not within the days appointed, and that the Philistines assembled themselves together at Michmash;

12therefore said I, Now will the Philistines come down upon me to Gilgal, and I have not entreated the favour of the LORD: I forced myself therefore, and offered the burnt offering.

13And Samuel said to Saul, Thou hast done foolishly: thou hast not kept the commandment of the LORD thy God, which he commanded thee: for now would the LORD have established thy kingdom upon Israel for ever.