2 Samuel 1:6-10

6And the young man that told him said, I happened by chance to be upon mount Gilboa, and behold, Saul leaned on his spear; and behold, the chariots and horsemen followed hard after him.

7And he looked behind him, and saw me, and called to me. And I said, Here am I.

8And he said to me, Who art thou? And I said to him, I am an Amalekite.

9He said to me again, Stand, I pray thee, over me, and slay me; for anguish has seized me; for my life is yet whole in me.

10So I stood over him, and put him to death, for I knew that he would not live after his fall; and I took the crown that was upon his head, and the bracelet that was on his arm, and have brought them hither to my lord.