Jeremiah 3:20

Surely as a wife treacherously departeth from her husband ,.... Or, "her friend" F9 מרעה "ab amico suo", Vatablus, Junius & Tremellius, Piscator; "a socio suo", Cocceius. ; who loves her, takes care of her, and provides for her, and goes after another man, and cohabits with him; which is a violation of the marriage covenant, and acting a base and treacherous part unto him to whom she is married

so have you dealt treacherously with me, O house of Israel, saith the Lord ; who was their Father, friend, and husband; who loved them and distinguished them from all other people, by a variety of blessings and privileges; and yet they departed from his commandments and ordinances, and held the traditions of the elders, and taught for doctrines the commandments of men, and rejected the Messiah, and still continue in their disbelief of him, and hatred to him; and therefore it need not be wondered at that he should make any difficulty about their adoption and inheritance; and a marvellous thing it must be to take such persons, and put them openly among his children, and give them a right and meetness for the goodly inheritance.