I Samuel 13:8-10

Then he waited seven days, according to the time set by Samuel. But Samuel did not come to Gilgal; and the people were scattered from him. So Saul said, “Bring a burnt offering and peace offerings here to me.” And he offered the burnt offering. Now it happened, as soon as he had finished presenting the burnt offering, that Samuel came; and Saul went out to meet him, that he might greet him.