'Treacherously' in the Bible

“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?

Judah has dealt treacherously, and an abomination has been committed in Israel and in Jerusalem; for Judah has profaned the sanctuary of the Lord which He loves and has married the daughter of a foreign god.

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.

But not one has done so who has a remnant of the Spirit. And what did that one do while he was seeking a godly offspring? Take heed then to your spirit, and let no one deal treacherously against the wife of your youth.

For I hate divorce,” says the Lord, the God of Israel, “and him who covers his garment with wrong,” says the Lord of hosts. “So take heed to your spirit, that you do not deal treacherously.”