1 Samuel 13:3-4

Jonathan attacked and killed the Philistine governor stationed at Geba (Gibeah). When the Philistines heard the news, they raised the alarm: “The Hebrews are in revolt!” Saul ordered the reveille trumpets blown throughout the land. The word went out all over Israel, “Saul has killed the Philistine governor—drawn first blood! The Philistines are stirred up and mad as hornets!” Summoned, the army came to Saul at Gilgal.