וַיָּ֣קָם שְׁמוּאֵ֗ל וַיַּ֛עַל מִן־הַגִּלְגָּ֖ל גִּבְעַ֣ת בִּנְיָמִ֑ן וַיִּפְקֹ֣ד שָׁא֗וּל אֶת־הָעָם֙ הַנִּמְצְאִ֣ים עִמּ֔וֹ כְּשֵׁ֥שׁ מֵא֖וֹת אִֽישׁ׃
And Samuel arose, and got him up from Gilgal unto Gibeath-benjamin. And Saul numbered the people that were present with him, about six hundred men.
Read midrashic interpretation of I Samuel 13:15: and classical rabbinic exegesis.