15When our enemies heard that it was known to us and that God had frustrated their plan, we all returned to the wall, each to his work.
The list is found in Nehemiah 4:7. As mentioned in the comments on that verse, these enemies live east, north, west, and south of Judah. Nehemiah and his people, then, were literally surrounded by antagonists.
15 When our enemies heard that it was known to us and that God had frustrated their plan, we all returned to the wall, each to his work.