1 Chronicles 10:8-13

8It came about the next day, when the Philistines came to strip the slain, that they found Saul and his sons fallen on Mount Gilboa. 91So they stripped him and took his head and his armor and sent messengers around the land of the Philistines to carry the good news to their idols and to the people. 10They put his armor in the house of their gods and fastened his head in the house of Dagon. 11When all Jabesh-gilead heard all that the Philistines had done to Saul, 122all the valiant men arose and took away the body of Saul and the bodies of his sons and brought them to Jabesh, and they buried their bones under the oak in Jabesh, and fasted seven days.

133So Saul died for his trespass which he committed against the Lord, because of the word of the Lord which he did not keep; and also 4because he asked counsel of a medium, making inquiry of it,