1 Samuel 13:10-12

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.”