1 Kings 1:38-39

So Zadok the priest, Nathan the prophet, Benaiah son of Jehoiada, and the king’s bodyguard took Solomon down to Gihon Spring, with Solomon riding on King David’s own mule. There Zadok the priest took the flask of olive oil from the sacred tent and anointed Solomon with the oil. Then they sounded the ram’s horn and all the people shouted, “Long live King Solomon!”