1 Samuel 13:8-12

Now he waited for seven days, until the appointed time that Samuel had set, but Samuel did not come to Gilgal; and the people were scattering from him.

So Saul said, “Bring me the burnt offering and the peace offerings.” And he offered the burnt offering.

But 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, “Since I saw that the people were scattering from me, and that you did not come at the appointed time, and that the Philistines were assembling at Michmash,

I thought, ‘Now the Philistines will come down against me at Gilgal, and I have not asked the favor of the Lord.’ So I worked up the courage and offered the burnt offering.”