Here is, I. The charge God exhibits against Israel for their treacherous departures from him, v. 20. As an adulterous wife elopes from her husband, so have they gone a whoring from God. They were joined to God by a marriage-covenant, but they broke that covenant, they dealt treacherously with God, who had always dealt kindly and faithfully with them. Treacherous dealing with men like ourselves is bad enough, but to deal treacherously with God is to deal treasonably.