1 Kings 1:29-35

Then the king swore an oath and said, “As the LORD lives, who has redeemed my soul from all distress, even as I swore to you by the LORD, the God of Israel, saying, ‘Solomon your son shall certainly be king after me, and he shall sit on my throne in my place’; I will indeed do so this very day.” Bathsheba bowed down with her face to the ground, and laid herself face down before the king and said, “May my lord King David live forever!” Then King David said, “Call Zadok the priest, Nathan the prophet, and Benaiah the son of Jehoiada to me.” And they came before the king. The king told them, “Take the servants of your lord with you and have Solomon my son ride on my own mule, and bring him down to [the spring at] Gihon [in the Kidron Valley]. Let Zadok the priest and Nathan the prophet anoint him there as king over Israel. Then blow the trumpet and say, ‘Long live King Solomon!’ Then you shall come up [to Jerusalem] after him, and he shall come and sit on my throne and he shall reign as king in my place; for I have appointed him to be ruler over Israel and Judah.”