1 Samuel 13:7-14

Also some of the Hebrews crossed the Jordan into the land of Gad and Gilead. But as for Saul, he was still in Gilgal, and all the people followed him trembling. Now he waited seven days, according to the appointed time set by Samuel, but Samuel did not come to Gilgal; and the people were scattering from him. So Saul said, “Bring to me the burnt offering and the peace offerings.” And he offered the burnt offering. As soon as he finished offering the burnt offering, behold, Samuel came; and Saul went out to meet him and to greet him. 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. But now your kingdom shall not endure. The LORD has sought out for Himself a man after His own heart, and the LORD has appointed him as ruler over His people, because you have not kept what the LORD commanded you.”