en_tn_condensed/jer/15/04.md

I will make of them

Here the word "them" refers to the people of Judah, not to the four groups listed in the previous verse.

because of what Manasseh ... did in Jerusalem

Manasseh was a very wicked king who did many evil things in Jerusalem. Alternate translation: "because of the wicked things that Manasseh ... did in Jerusalem" (See: rc://en/ta/man/translate/figs-explicit)