Psalm 89:35 (KJV) Once have I sworn by my holiness that I will not lie unto David.
36 His seed shall endure for ever, and his throne as the sun before me.
37 It shall be established for ever as the moon, and as a faithful witness in heaven. Selah.
Luke 1:32 He shall be great, and shall be called the Son of the Highest: and the Lord God shall give unto him the throne of his father David:
33 And he shall reign over the house of Jacob for ever; and of his kingdom there shall be no end.