Psalms 89:34-36

³⁴I will not break the agreement that I made with him; I will not change even one word that I spoke to him.

³⁵Once I made a solemn promise to David, and that will never change, and because I am God, I will never lie to David.

³⁶I promised that the line of kings descended from him will go on forever; it will last as long as the sun shines.