1 Samuel 13:11-13

But Samuel said, “What have you done?” And Saul said, “Because I saw that the people were scattering from me, and that you did not come within the appointed days, and that the Philistines were assembling at Michmash, therefore I said, ‘Now the Philistines will come down against me at Gilgal, and I have not asked the favor of the LORD.’ So I forced myself and offered the burnt offering.” Samuel said to Saul, “You have acted foolishly; you have not kept the commandment of the LORD your God, which He commanded you, for now the LORD would have established your kingdom over Israel forever.