1 Samuel 31:2-6

2And the Philistines followed hard upon Saul and upon his sons; and the Philistines slew Jonathan, and Abinadab, and Malchi-shua, the sons of Saul.

3And the battle went sore against Saul, and the archers overtook him; and he was greatly distressed by reason of the archers.

4Then said Saul to his armourbearer, Draw thy sword, and thrust me through therewith; lest these uncircumcised come and thrust me through, and abuse me. But his armourbearer would not; for he was sore afraid. Therefore Saul took his sword, and fell upon it.

5And when his armourbearer saw that Saul was dead, he likewise fell upon his sword, and died with him.

6So Saul died, and his three sons, and his armourbearer, and all his men, that same day together.