1 Samuel 13:2

13:2 Saul selected for himself three thousand men from Israel. Two thousand of these were with Saul at Micmash and in the hill country of Bethel; the remaining thousand were with Jonathan at Gibeah in the territory of Benjamin. He sent all the rest of the people back home.

1 Samuel 13:15

13:15 Then Samuel set out and went up from Gilgal to Gibeah in the territory of Benjamin. Saul mustered the army that remained with him; there were about six hundred men.