1 Kings 2:23 WEB

²¹  She said, Let Abishag the Shunammite be given to Adonijah your brother as wife.

²²  King Solomon answered his mother, Why do you ask Abishag the Shunammite for Adonijah? ask for him the kingdom also; for he is my elder brother; even for him, and for Abiathar the priest, and for Joab the son of Zeruiah.

²³  Then king Solomon swore by Yahweh, saying, God do so to me, and more also, if Adonijah has not spoken this word against his own life.

²⁴  Now therefore as Yahweh lives, who has established me, and set me on the throne of David my father, and who has made me a house, as he promised, surely Adonijah shall be put to death this day.

²⁵  King Solomon sent by Benaiah the son of Jehoiada; and he fell on him, so that he died.