1 Samuel 13:15

15And 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
Septuagint; Hebrew lacks  The rest of the people . . . from Gilgal
to b  Gibeah of Benjamin.

And Saul numbered the people who were present with him, c  about six hundred men.
Copyright information for ESV