2 Samuel 1:13-15

13 And David said to the young man who told him, From where [are] you? And he answered, I [am] the son of a stranger, an Amalekite.

14 And David said, Why were you not afraid to stretch forth your hand to destroy the LORD's anointed?

15 And David called one of the young men and said, Go near; fall on him. And he struck him so that he died.