AKJV(i)
23 Then king Solomon swore by the LORD, saying, God do so to me, and more also, if Adonijah have not spoken this word against his own life.
24 Now therefore, as the LORD lives, which has established me, and set me on the throne of David my father, and who has made me an house, as he promised, Adonijah shall be put to death this day.
25 And king Solomon sent by the hand of Benaiah the son of Jehoiada; and he fell on him that he died.