1 Samuel 13:11-15

11And Samuel said, What hast thou done? And Saul said, Because I saw that the people were scattered from me, and that thou camest not within the days appointed, and that the Philistines assembled themselves together at Michmash; 12therefore said I, Now will the Philistines come down upon me to Gilgal, and I have not entreated the favor of Jehovah: I forced myself therefore, and offered the burnt-offering. 13And Samuel said to Saul, Thou hast done foolishly; thou hast not kept the commandment of Jehovah thy God, which he commanded thee: for now would Jehovah have established thy kingdom upon Israel for ever. 14But now thy kingdom shall not continue: Jehovah hath sought him a man after his own heart, and Jehovah hath appointed him to be prince over his people, because thou hast not kept that which Jehovah commanded thee. 15And Samuel arose, and gat him up from Gilgal unto Gibeah of Benjamin.

And Saul numbered the people that were present with him, about six hundred men.