'Covenant' in the Bible

Then you will know that I sent you this decree so My covenant with Levi may continue,” says the Lord of Hosts.

“My covenant with him was one of life and peace, and I gave these to him; it called for reverence, and he revered Me and stood in awe of My name.

“You, on the other hand, have turned from the way. You have caused many to stumble by your instruction. You have violated the covenant of Levi,” says the Lord of Hosts.

Don’t all of us have one Father? Didn’t one God create us? Why then do we act treacherously against one another, profaning the covenant of our fathers?

Yet you ask, “For what reason?” Because the Lord has been a witness between you and the wife of your youth. You have acted treacherously against her, though she was your marriage partner and your wife by covenant.

“See, I am going to send My messenger, and he will clear the way before Me. Then the Lord you seek will suddenly come to His temple, the Messenger of the covenant you desire—see, He is coming,” says the Lord of Hosts.