1 Samuel 13:2, 16

Saul chose three thousand men from Israel; two thousand were with him at Mikmash and in the hill country of Bethel, and a thousand were with Jonathan at Gibeah in Benjamin. The rest of the men he sent back to their homes.

Saul and his son Jonathan and the men with them were staying in Gibeah in Benjamin, while the Philistines camped at Mikmash.