1 Kings 2:23-25

New Century Version

²³ Then King Solomon swore by the name of the Lord, saying, “May God punish me terribly if this doesn’t cost Adonijah his life! ²⁴ By the Lord who has given me the throne that belonged to my father David and who has kept his promise and given the kingdom to me and my people, Adonijah will die today!” ²⁵ Then King Solomon gave orders to Benaiah son of Jehoiada, and he went and killed Adonijah.