The twilight - The evening twilight (see 2 Kings 7:9).
The uttermost part of the camp - The extreme boundary of the camp toward the city, not its furthest or most distant portion. Compare 2 Kings 7:8.
Related Commentaries of 2 Kings 7:5
2 Kings 7:5
5 And they rose up in the twilight, to go unto the camp of the Syrians: and when they were come to the uttermost part of the camp of Syria, behold, there was no man there.