21 And she said, Let Abishag the Shunammite be given to Adonijah thy brother as wife. 22 And 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. 23 And king Solomon swore by Jehovah saying, God do so to me, and more also,—Adonijah has spoken this word against his own life! 24 And 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.
Matthew Henry's Commentary on 1 Kings 2:21-24
Commentary on 1 Kings 2:12-25
(Read 1 Kings 2:12-25)
Solomon received Bathsheba with all the respect that was owing to a mother; but let none be asked for that which they ought not to grant. It ill becomes a good man to prefer a bad request, or to appear in a bad cause. According to eastern customs it was plain that Adonijah sought to be king, by his asking for Abishag as his wife, and Solomon could not be safe while he lived. Ambitious, turbulent spirits commonly prepare death for themselves. Many a head has been lost by catching at a crown.