1 Kings 2:23 WBT

²¹  And she said, Let Abishag the Shunamite be given to Adonijah thy brother for a wife.

²²  And king Solomon answered and said to his mother, And why dost thou ask Abishag the Shunamite 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 the LORD, saying, God do so to me, and more also, if Adonijah hath not spoken this word against his own life.

²⁴  Now therefore, [as] the LORD liveth, who hath established me, and set me on the throne of David my father, and who hath made me a 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 upon him that he died.