Josephus, Antiquities 5.2.12 (1st cent. A.D.)
(166) However, they afterward were sorry for the calamity they had brought upon the Benjamites, and appointed a fast on that account, although they supposed those men had suffered justly for their offense against the laws; so they recalled by their ambassadors those six hundred which had escaped. These had seated themselves on a certain rock called Rimmon, which was in the wilderness.