Bathsheba presents the request

20She said, “I am asking one small request of you; do not turn away my face.” And the king said to her, “Ask, my mother, for I will not turn away your face.”

21And she said, “Let Abishag the Shunammite be given to Adonijah your brother as a wife.”

22King Solomon answered and said to his mother, “Why are you asking for Abishag the Shunammite for Adonijah? Ask for the kingship for him as well, since he is my older brother—and for him, for Abiathar the priest, and for Joab son of Zeruiah!”