Albert Barnes Commentary Jeremiah 15:14

"And I will make [them] to pass with thine enemies into a land which thou knowest not; for a fire is kindled in mine anger, which shall burn upon you." — Jeremiah 15:14 (ASV)

Render, And I will make thee serve thine enemies in a land thou knewest not.

For a fire ... - See the marginal reference. The added words show that the punishment then predicted is about to be fulfilled.