1 Kings 2:21-24

21And she said, Let Abishag the Shunammite be given to Adonijah thy brother as wife.

22And king Solomon answered and said to his mother, And why dost thou ask Abishag the Shunammite for Adonijah? ask for him the kingdom also; for he is mine elder brother; even for him, and for Abiathar the priest, and for Joab the son of Zeruiah.

23And king Solomon swore by Jehovah saying, 1God do so to me, and more also, — Adonijah has spoken this word against his own life!

24And now [as] Jehovah liveth, who has established me, and set me on the throne of David my father, and who has made me a house, as he promised, Adonijah shall be put to death this day.