2 Samuel 1:11-15

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

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.

And David said unto the young man that told him, Whence art thou? And he answered, I am the son of a stranger, an Amalekite.

And David said unto him, How wast thou not afraid to stretch forth thine hand to destroy the LORD’s anointed?

And David called one of the young men, and said, Go near, and fall upon him. And he smote him that he died.