The severe sentence passed upon them is the consequence of idolatry persisted in through many generations until it has finally deepened into national apostasy.
Related Commentaries of Jeremiah 16:11
Jeremiah 16:11
11 Then shalt thou say unto them, Because your fathers have forsaken me, saith the LORD, and have walked after other gods, and have served them, and have worshipped them, and have forsaken me, and have not kept my law;