Malachi 2:10-11

Do we not all have one Father? Has not one God created us? Why do we deal treacherously with one another, profaning the covenant of our fathers [with God]? Judah has been treacherous (disloyal), and a repulsive act 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. [Ezra 9:2; Jer 2:3]