'Covenant' in the Bible

I said, “I beseech You, O Lord God of heaven, the great and awesome God, who preserves the covenant and lovingkindness for those who love Him and keep His commandments,

“You found his heart faithful before You,And made a covenant with himTo give him the land of the Canaanite,Of the Hittite and the Amorite,Of the Perizzite, the Jebusite and the Girgashite—To give it to his descendants.And You have fulfilled Your promise,For You are righteous.

“Now therefore, our God, the great, the mighty, and the awesome God, who keeps covenant and lovingkindness,Do not let all the hardship seem insignificant before You,Which has come upon us, our kings, our princes, our priests, our prophets, our fathers and on all Your people,From the days of the kings of Assyria to this day.

Remember them, O my God, because they have defiled the priesthood and the covenant of the priesthood and the Levites.