Charles Ellicott Commentary Jeremiah 11:10

"They are turned back to the iniquities of their forefathers, who refused to hear my words; and they are gone after other gods to serve them: the house of Israel and the house of Judah have broken my covenant which I made with their fathers." — Jeremiah 11:10 (ASV)

Their forefathers. —The Hebrew is more specific— their first fathers , 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.