Jeremiah 3:20

Here is, I. The charge God exhibits against Israel for their treacherous departures from him, Jer 3:20. 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. II. Their conviction and confession of the truth of this charge, Jer 3:21. When God reproved them for their apostasy, there were some among them, even such as God would take and bring to Zion, whose voice was heard upon the high places weeping and praying, humbling themselves before the God of their fathers, lamenting their calamities, and their sins, the procuring cause of them; for this is that which they lament, for this they bemoan themselves, that they have perverted their way and forgotten the Lord their God. Note, 1. Sin is the perverting of our way, it is turning aside to crooked ways and perverting that which is right. 2. Forgetting the Lord our God is at the bottom of all sin. If men would remember God, his eye upon them and their obligation to him, they would not transgress as they do. 3. By sin we embarrass ourselves, and bring ourselves into trouble, for that also is the perverting of our way, Lam 3:9. 4.

— Matthew Henry's Concise Commentary (public domain)

Surely--rather, "But." husband--literally, "friend."

— Jamieson-Fausset-Brown Commentary (public domain)