1 Chronicles 10:
1Now the Philistines fought against Israel, and the men of Israel fled before the Philistines and fell slain on Mount Gilboa. 2And the Philistines overtook Saul and his sons, and the Philistines struck down Jonathan and Abinadab and Malchi-shua, the sons of Saul. 3The battle pressed hard against Saul, and the archers found him, and he was wounded by the archers. 4Then Saul said to his armor-bearer, “Draw your sword and thrust me through with it, lest these uncircumcised come and mistreat me.” But his armor-bearer would not, for he feared greatly. Therefore Saul took his own sword and fell upon it. 5And when his armor-bearer saw that Saul was dead, he also fell upon his sword and died. 6Thus Saul died; he and his three sons and all his house died together. 7And when all the men of Israel who were in the valley saw that the army had fled and that Saul and his sons were dead, they abandoned their cities and fled, and the Philistines came and lived in them.
13So Saul died for his breach of faith. He broke faith with the LORD in that he did not keep the command of the LORD, and also consulted a medium, seeking guidance. 14He did not seek guidance from the LORD. Therefore the LORD put him to death and turned the kingdom over to David the son of Jesse.