richmahn_en_tn/jer/48/43.md

Terror and the pit, and a trap are coming on you

Here "coming on you" is an idiom that means "to experience" something. Alternate translation: "You will experience the terror, the pit, and a trap" or "You will be terrified, and you will fall into pits and traps" (See: rc://en/ta/man/translate/figs-idiom)

this is Yahweh's declaration

Yahweh speaks of himself by name to express the certainty of what he is declaring. See how you translated this in Jeremiah 1:8. Alternate translation: "this is what Yahweh has declared" or "this is what I, Yahweh, have declared" (See: rc://en/ta/man/translate/figs-123person)