II Samuel 1:13-15

Then David said to the young man who told him, “Where are you from?” And he answered, “I am the son of an alien, an Amalekite.” So David said to him, “How was it you were not afraid to put forth your hand to destroy the LORD’s anointed?” Then David called one of the young men and said, “Go near, and execute him!” And he struck him so that he died.