en_tn_condensed/jer/50/28.md

There is the sound of those fleeing

"Listen and you will hear those who are fleeing"

those ... those ... These

The words "those" and "These" refer to the survivors from Babylon who will tell others about Yahweh's vengeance.

the vengeance of Yahweh our God for Zion, and vengeance for his temple

The abstract noun "vengeance" can be stated as an action. Alternate translation: "Yahweh our God has taken revenge for what they did to Zion and to his temple in Jerusalem" (See: rc://en/ta/man/jit/figs-abstractnouns)