2 Kings 9:1-7

And Elisha the prophet called one of the sons of the prophets, and said unto him, Gird up thy loins, and take this vial of oil in thy hand, and go to Ramoth-gilead. And when thou comest thither, look out there Jehu the son of Jehoshaphat the son of Nimshi, and go in, and make him arise up from among his brethren, and carry him to an inner chamber. Then take the vial of oil, and pour it on his head, and say, Thus saith Jehovah, I have anointed thee king over Israel. Then open the door, and flee, and tarry not. So the young man, even the young man the prophet, went to Ramoth-gilead. And when he came, behold, the captains of the host were sitting; and he said, I have an errand to thee, O captain. And Jehu said, Unto which of us all? And he said, To thee, O captain. And he arose, and went into the house; and he poured the oil on his head, and said unto him, Thus saith Jehovah, the God of Israel, I have anointed thee king over the people of Jehovah, even over Israel. And thou shalt smite the house of Ahab thy master, that I may avenge the blood of my servants the prophets, and the blood of all the servants of Jehovah, at the hand of Jezebel.