1 Samuel 31:6

David also said, “As Yahweh lives, surely Yahweh will smite him, or his day will come that he dies, or he will go down into battle and be swept away.

Now it happened after the death of Saul, that David returned from striking down the Amalekites. Then David remained two days in Ziklag.

And the young man who told him said, “By chance I happened to be on Mount Gilboa, and behold, Saul was leaning on his spear. And behold, the chariots and the horsemen pursued him closely.

Now the Philistines fought against Israel; and the men of Israel fled from before the Philistines and fell slain on Mount Gilboa.

Thus Saul died with his three sons, and all those of his house died together.