David Dies Of Natural Causes; Solomon's Enemies Die Of Benaiah
Before he dies, David's final advice to Solomon is as follows:
"Be strong. Show that you're a man. Keep the Lord's commandments/judgments/testimonies/laws. If you do, you'll always prosper, and our sons will always sit on the throne of Israel. Remember when Joab murdered Abner and Amasa? He's gotta die. Take care of that. While you're at it, deal with Shimei, too. I promised I personallywouldn't kill him, even though he cursed me, so you do the honors. Oh—and make sure to watch after my friend Barzillai and his family. He helped me out when I needed him."
David dies and is buried, ending a glorious 40-year reign.
Solomon has hardly begun his own tenure as king when Adonijah visits Bath-sheba with a shady proposal: He wants to marry the newly widowed Abishag, and he wants Bath-sheba to convince Solomon that it's a good idea. She agrees to try, for some reason.
Solomon doesn't go for it. He's like, "Sheesh, Mom. Why don't you just ask me to give him the whole kingdom while you're at it? No— You know what? That's it. Adonijah's gonna die today."
An over-reaction? Maybe not. See, when a king dies, all of his possessions (including his wives—no offense, wives) belong to his heir. So for Adonijah to try to marry Abishag was kind of like trying to become king all over again.