1 Samuel 15:14-19

14But Samuel said, “What then is this bleating of sheep in my ears? What is this lowing of cattle that I hear?”

15Saul answered, “The soldiers brought them from the Amalekites; they spared the best of the sheep and cattle to sacrifice to the LORD your God, but we totally destroyed the rest.”

16“Enough!” Samuel said to Saul. “Let me tell you what the LORD said to me last night.” “Tell me,” Saul replied. 17Samuel said, “Although you were once small in your own eyes, did you not become the head of the tribes of Israel? The LORD anointed you king over Israel. 18And he sent you on a mission, saying, ‘Go and completely destroy those wicked people, the Amalekites; wage war against them until you have wiped them out.’

19Why did you not obey the LORD ? Why did you pounce on the plunder and do evil in the eyes of the LORD ?”