en_tn_condensed/jer/50/18.md

Yahweh of hosts ... says this

Jeremiah often uses these words to introduce an important message from Yahweh. See how you translated this in Jeremiah 6:6.

See, I am about to

The word "See" means to pay special attention to what follows.

his land

Here "land" is a metonym for the people who live in the land of Babylon. Alternate translation: "the Babylonian people" (See: rc://en/ta/man/jit/figs-metonymy)