From The Second Book of Samuel 1:1-12

1 Now it came to pass after the death of Saul, when David was returned from the slaughter of the Am'a-liek-ites, and David had abode two days in Ziklag;

2 It came even to pass on the third day, that, behold, a man came out of the camp from Saul with his clothes rent, and earth upon his head: and so was, when he came to David, that he fell to the earth, and did obeisance.

3 And David said unto him, From whence comest thou? And he said unto him , Out of the camp of Israel am I escaped.

4 And David said unto him, How went the matter? I pray thee, tell me. And he answered, That the people are fled from the battle, and many of the people also are fallen and dead; and Saul and Jonathan his son are dead also.

5 And David said unto the young man that told him, How knowest thou that Saul and Jonathan his son be dead?

6 And the young man that told him said, As I happened by chance upon mount Gil-bi'a, behold, Saul leaned upon his pear; and, lo, the chariots and horsemen followed hard after him.

7 And when he looked behind him, he saw me, and called unto me. And I answered, Here am I.

8 And he said unto me, Who art thou? And I answered him, I am an Am-a-lek-ite.

9 He said unto me again, Stand, I pray thee, upon me, and slay me: for anguish is come upon me, because my life is yet whole in me.

10 So I stood upon him, and slew him, because I was sure that he could not live after that he was fallen: and I took the crown that was upon his dead, and the bracelet that was on his arm, and have brought them hither unto my lord.

11 Then David took hold on his clothes, and rent them; and likewise all the men that were with him:

12 And they mourned, and wept, and fasted until even, for Saul, and for Jonathan his son, and for the people of the Lord, and for the house of Israel; because they were fallen by the sword.