1 Samuel 13:12, 15

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.”

And Samuel arose and went up from Gilgal. The rest of the people went up after Saul to meet the army; they went up from Gilgal to Gibeah of Benjamin. And Saul numbered the people who were present with him, about six hundred men.