1 Kings 1:10-14

10But he did not invite Nathan the prophet or Benaiah or the king’s bodyguard or his brother Solomon.

11Then Nathan went to Bathsheba, Solomon’s mother, and asked her, “Haven’t you heard that Haggith’s son, Adonijah, has made himself king, and our lord David doesn’t even know about it?

12If you want to save your own life and the life of your son Solomon, follow my advice.

13Go at once to King David and say to him, ‘My lord the king, didn’t you make a vow and say to me, “Your son Solomon will surely be the next king and will sit on my throne”? Why then has Adonijah become king?’

14And while you are still talking with him, I will come and confirm everything you have said.”