1 Kings 1:13 in the King James Version
Go and get thee in unto king David, and say unto him, Didst not thou, my lord, O king, swear unto thine handmaid, saying, Assuredly Solomon thy son shall reign after me, and he shall sit upon my throne? why then doth Adonijah reign?
Context
12 Now therefore come, please let me give you counsel, that you may save your own life and your son Solomon’s life.
13 Go in to King David, and tell him, ‘Didn’t you, my lord the king, swear to your servant, saying, “Assuredly Solomon your son shall reign after me, and he shall sit on my throne”? Why then does Adonijah reign?’
14 Behold, while you are still talking there with the king, I will also come in after you and confirm your words.”