'Covenant' in the Bible

I said, "O Yahweh God of the heavens, the great and awesome one who keeps the covenant and loyal love for the ones who love him and for those who keep his commands.

You found his heart faithful before you and made a covenant with him to give the land of the Canaanite, the Hittite, the Amorite, the Perizzite, the Jebusite and the Girgashite--to give [it] to his seed. And you have kept your word because you are righteous.

"And now our God, the great, mighty, and awesome God who keeps [his] covenant and loyal love, do not belittle in your presence all of the hardship that is found in us, our kings, our officials, our priests, our prophets, our ancestors, and all of our people, from the days of the kings of Assyria until this day.

Remember them, my God, because of their defilements of the priesthood and the covenant of the priesthood and the Levites.