Charles Ellicott Commentary Jeremiah 16:13

"therefore will I cast you forth out of this land into the land that ye have not known, neither ye nor your fathers; and there shall ye serve other gods day and night; for I will show you no favor." — Jeremiah 16:13 (ASV)

There you shall serve other gods day and night. —The words are spoken in the bitterness of irony: “You have chosen to serve the gods of other nations here in your own land; therefore, by a righteous retribution, you shall serve them in another sense, as being in bondage to their worshippers, and neither night nor day shall give you respite.”

Where I will not show you favour. —Better, since, or for, I will not show you favour.