2 Samuel 1:8-10

8“He asked me, ‘Who are you?’ “ ‘An Amalekite,’ I answered.

9“Then he said to me, ‘Stand here by me and kill me! I’m in the throes of death, but I’m still alive.’

10“So I stood beside him and killed him, because I knew that after he had fallen he could not survive. And I took the crown that was on his head and the band on his arm and have brought them here to my lord.”