Quoting Commentary for I Samuel 13:4

וְכָל־יִשְׂרָאֵ֞ל שָׁמְע֣וּ לֵאמֹ֗ר הִכָּ֤ה שָׁאוּל֙ אֶת־נְצִ֣יב פְּלִשְׁתִּ֔ים וְגַם־נִבְאַשׁ יִשְׂרָאֵ֖ל בַּפְּלִשְׁתִּ֑ים וַיִּצָּעֲק֥וּ הָעָ֛ם אַחֲרֵ֥י שָׁא֖וּל הַגִּלְגָּֽל׃

And all Israel heard say that Saul had smitten the garrison of the Philistines, and that Israel also had made himself odious with the Philistines. And the people were gathered together after Saul to Gilgal.