1 Kings 1:5, 32-37

Then Adonijah the son of Haggith exalted himself, saying, I will be king: and he prepared him chariots and horsemen, and fifty men to run before him.

And king David said, Call to me Zadok the priest, and Nathan the prophet, and Benaiah the son of Jehoiada. And they came before the king. And the king said unto them, Take with you the servants of your lord, and cause Solomon my son to ride upon mine own mule, and bring him down to Gihon: and let Zadok the priest and Nathan the prophet anoint him there king over Israel; and blow ye the trumpet, and say, Long live king Solomon. Then ye shall come up after him, and he shall come and sit upon my throne; for he shall be king in my stead; and I have appointed him to be prince over Israel and over Judah. And Benaiah the son of Jehoiada answered the king, and said, Amen: Jehovah, the God of my lord the king, say so too. As Jehovah hath been with my lord the king, even so be he with Solomon, and make his throne greater than the throne of my lord king David.