I Samuel 15:20

20 "But I did obey the Lord," Saul said. "I went on the mission the Lord assigned me. I completely destroyed the Amalekites and brought back Agag their king.

20 And Saul said, Truly, I have done the orders of the Lord and have gone the way the Lord sent me; I have taken Agag, the king of Amalek, and have given the Amalekites up to destruction.