1 Samuel 13:7-12

and some Hebrews crossed the fords of the Jordan to the land of Gad and Gilead. Saul was still at Gilgal, and all the people followed him trembling. He waited seven days, the time appointed by Samuel. But Samuel did not come to Gilgal, and the people were scattering from him. So Saul said, “Bring the burnt offering here to me, and the peace offerings.” And he offered the burnt offering. As soon as he had finished offering the burnt offering, behold, Samuel came. And Saul went out to meet him and greet him. Samuel said, “What have you done?” And Saul said, “When I saw that the people were scattering from me, and that you did not come within the days appointed, and that the Philistines had mustered at Michmash, I said, ‘Now the Philistines will come down against me at Gilgal, and I have not sought the favor of the LORD.’ So I forced myself, and offered the burnt offering.”