Now Adonijah the son of [David and] Haggith came to Bathsheba the mother of Solomon. She said, “Do you come in peace?” And he said, “In peace.” Then he said, “I have something to say to you.” And she said, “Speak.” So he said, “You know that the kingdom belonged to me [as the eldest living son] and all Israel looked to me and expected me to be king. However, the kingdom has passed [from me] and became my brother’s, for it was his from the LORD. So now I am making one request of you; do not refuse me.” And she said to him, “Speak.” He said, “Please speak to King Solomon, for he will not refuse you; ask that he may give me Abishag the Shunammite as a wife.” [1 Kin 1:1-4] Bathsheba replied, “Very well; I will speak to the king for you.”
So Bathsheba went to King Solomon to speak to him for Adonijah. And the king rose to meet her, bowed before her, and sat down on his throne; then he had a throne set for her, the king’s mother, and she sat on his right. Then she said, “I am making one small request of you; do not refuse me.” And the king said to her, “Ask, my mother, for I will not refuse you.” So she said, “Let Abishag the Shunammite be given to your brother Adonijah as a wife.” King Solomon answered and said to his mother, “And why are you asking for Abishag the Shunammite for Adonijah? Ask the kingdom for him also—since he is my older brother—[ask it] for him and for Abiathar the priest and Joab the son of Zeruiah [his supporters]!” Then King Solomon swore by the LORD, saying, “May God do the same to me, and more also, if Adonijah has not requested this [deplorable] thing against his own life. So now, as the LORD 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, Adonijah shall indeed be put to death today.” So King Solomon sent Benaiah the son of Jehoiada, and he struck Adonijah and he died.
Then the king said to Abiathar the priest, “Go to Anathoth to your own fields, for you certainly deserve to die; but I will not put you to death this day, because you carried the ark of the Lord GOD before my father David, and you suffered everything that my father endured.” So Solomon dismissed Abiathar [a descendant of Eli] from being priest to the LORD, fulfilling the word of the LORD, which He had spoken concerning the house (descendants) of Eli in Shiloh. [1 Sam 2:27-36]