1 Kings 1:11-14

11Then Nathan spoke to Bathsheba the mother of Solomon, “Have you not heard that Adonijah the son of Haggith has become king, and David our lord does not know about it?

12Come now, please let me advise you and save your life and the life of your son Solomon.

13Go at once to King David and say to him, ‘Did you not, my lord, O king, swear to your maidservant, saying, “Solomon your son shall certainly be king after me, and he shall sit on my throne”? Why then has Adonijah become king?’

14Behold, while you are still there speaking with the king, I will come in after you and confirm your words.”