1 Chronicles 10:8-13

8The next day, when the Philistines came to strip the slain, they found Saul and his sons fallen on Mount Gilboa.

9They stripped him and took his head and his armor, and sent messengers throughout the land of the Philistines proclaiming the good news to their idols and to the people.

10They put his armor in the house of their gods, and hung his head in the house of Dagon.

11Now when all Jabesh Gilead heard all that the Philistines had done to Saul,

12all the valiant men arose and retrieved the body of Saul and the bodies of his sons and brought them to Jabesh. They buried their bones under the oak tree in Jabesh, and fasted seven days.

13So Saul died because of his unfaithful acts that he committed against the word of Adonai, which he did not keep, and he even consulted a medium for guidance