2 Kings 9:5-7

5And when he came, behold, the commanders of the army were in council. And he said, "I have a word for you, O commander." And Jehu said, "To which of us all?" And he said, "To you, O commander."

6So he arose and went into the house. And the young man poured the oil on his head, saying to him, "Thus says the Lord, the God of Israel, I anoint you king over the people of the Lord, over Israel.

7And you shall strike down the house of Ahab your master, so that I may avenge on Jezebel the blood of my servants the prophets, and the blood of all the servants of the Lord.