David C. Mitchell, «The Fourth Deliverer: A Josephite Messiah in 4QTestimonia», Vol. 86 (2005) 545-553
Commentators recognize a tri-polar messianism in 4Q175, based on the first three sections of the text. But the last section suggests that the text is in fact tetramessianic, featuring an eschatological Joshua. This is confirmed by similarities between 4Q175, the tetra-messianic "Four Craftsmen" baraitha, and Targ. Ps.-J. to Exod. 40,9-11; as well as by evidence that Joshua was a messianic type in postbiblical Judaism.