What does Ezekiel 21:19 mean?

Son of man, draw a map and mark two roads for the sword of the king of Babylon to take. Both roads should come from the same land. Mark a signpost where the road splits toward a city. Ezekiel 21:19 - Modern Text Bible

(God tells Ezekiel to make a visual aid showing two possible paths for Babylon’s army, symbolizing the coming invasion.)