1 Samuel 13:3-4

3Jonathan attacked the Philistine outpost at Geba, and the Philistines heard about it. Then Saul had the trumpet blown throughout the land and said, “Let the Hebrews hear!”

4So all Israel heard the news: “Saul has attacked the Philistine outpost, and now Israel has become obnoxious to the Philistines.” And the people were summoned to join Saul at Gilgal.