Psalms 89:28-37

My mercy will I keep for him for evermore, and my covenant shall stand fast with him.

His seed also will I make [to endure] for ever, and his throne as the days of heaven.

If his children forsake my law, and walk not in my judgments;

If they break my statutes, and keep not my commandments;

Then will I visit their transgression with the rod, and their iniquity with stripes.

Nevertheless my lovingkindness will I not utterly take from him, nor suffer my faithfulness to fail.

My covenant will I not break, nor alter the thing that is gone out of my lips.

Once have I sworn by my holiness that I will not lie unto David.

His seed shall endure for ever, and his throne as the sun before me.

It shall be established for ever as the moon, and [as] a faithful witness in heaven. Selah.