1 Sam 14:21

וְהָעִבְרִ֗ים הָי֤וּ לַפְּלִשְׁתִּים֙ כְּאֶתְמ֣וֹל שִׁלְשׁ֔וֹם אֲשֶׁ֨ר עָל֥וּ עִמָּ֛ם בַּֽמַּחֲנֶ֖ה סָבִ֑יב וְגַם־הֵ֗מָּה לִֽהְיוֹת֙ עִם־יִשְׂרָאֵ֔ל אֲשֶׁ֥ר עִם־שָׁא֖וּל וְיוֹנָתָֽן׃

And the Hebrews who had previously gone up into the surrounding camps of the Philistines now went over to the Israelites who were with Saul and Jonathan.