II Kings 9:6-8

Then he arose and went into the house. And he poured the oil on his head, and said to him, “Thus says the LORD God of Israel: ‘I have anointed you king over the people of the LORD, over Israel. You shall strike down the house of Ahab your master, that I may avenge the blood of My servants the prophets, and the blood of all the servants of the LORD, at the hand of Jezebel. For the whole house of Ahab shall perish; and I will cut off from Ahab all the males in Israel, both bond and free.