Their forefathers. — The Hebrew is more specific — their first fathers (as in Isaiah 43:27), with special reference to the idolatries of the forty years’ wandering and the first settlement in Canaan.
They went after other gods. — The Hebrew pronoun is emphatically repeated, as pointing back to the subject of the first clause of the verse, the men of Jeremiah’s own time — “they have gone after other gods.”