en_tn/jer/33/26.md

then I will reject the descendants ... and not bring

This completes the sentence that began in verse 25 with the contrary-to-fact condition, "If I have not established ... and if I have not fixed ... earth." God said this to assure his people that he will not reject them and he will bring someone to rule over them. Alternate translation: "Just as I have established the covenant ... so I will never reject the descendants ... and I will bring" (See: rc://en/ta/man/translate/figs-hypo)

I will restore their fortunes

"I will cause things to go well for them again" or "I will cause them to live well again" See how similar words are translated in Jeremiah 29:14.

show mercy to

Translate as "have compassion on" is translated in (Jeremiah 30:18).