1 Samuel 13:7-9

7 Some Hebrews even crossed the Jordan to the land of Gad and Gilead. Saul remained at Gilgal, and all the troops with him were quaking with fear.
8 He waited seven days, the time set by Samuel; but Samuel did not come to Gilgal, and Saul’s men began to scatter.
9 So he said, “Bring me the burnt offering and the fellowship offerings.” And Saul offered up the burnt offering.