Psalm 89:33-37

but I will not remove from him my steadfast love or be false to my faithfulness. I will not violate my covenant or alter the word that went forth from my lips. Once for all I have sworn by my holiness; I will not lie to David. His offspring shall endure forever, his throne as long as the sun before me. Like the moon it shall be established forever, a faithful witness in the skies.” Selah