'My Covenant' in the Bible

But unto the wicked God saith, What hast thou to do to declare my statutes, or that thou shouldest take my covenant in thy mouth?

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

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

If thy children will keep my covenant and my testimony that I shall teach them, their children shall also sit upon thy throne for evermore.