'Covenant' in the Bible

Then you will know that I have sent this commandment to you, that My covenant may continue with Levi,” says the Lord of hosts.

“My covenant with him was one of life and peace, and I gave them to him as an object of reverence; so he revered Me and stood in awe of My name.

But as for you, you have turned aside from the way; you have caused many to stumble by the instruction; you have corrupted the covenant of Levi,” says the Lord of hosts.

“Do we not all have one father? Has not one God created us? Why do we deal treacherously each against his brother so as to profane the covenant of our fathers?

Yet you say, ‘For what reason?’ Because the Lord has been a witness between you and the wife of your youth, against whom you have dealt treacherously, though she is your companion and your wife by covenant.

“Behold, I am going to send My messenger, and he will clear the way before Me. And the Lord, whom you seek, will suddenly come to His temple; and the messenger of the covenant, in whom you delight, behold, He is coming,” says the Lord of hosts.