'Covenant' in the Bible

I prayed to Yahweh my God, and made confession, and said, Oh, Lord, the great and dreadful God, who keeps covenant and loving kindness with those who love him and keep his commandments,

He shall make a firm covenant with many for one week: and in the midst of the week he shall cause the sacrifice and the offering to cease; and on the wing of abominations [shall come] one who makes desolate; and even to the full end, and that determined, shall [wrath] be poured out on the desolate.

The overwhelming forces shall be overwhelmed from before him, and shall be broken; yes, also the prince of the covenant.

Then shall he return into his land with great substance; and his heart [shall be] against the holy covenant; and he shall do [his pleasure], and return to his own land.

For ships of Kittim shall come against him; therefore he shall be grieved, and shall return, and have indignation against the holy covenant, and shall do [his pleasure]: he shall even return, and have regard to those who forsake the holy covenant.

Such as do wickedly against the covenant shall he pervert by flatteries; but the people who know their God shall be strong, and do [exploits].