Flavius Josephus, The Wars of the Jews
William Whiston, A.M., Ed.

[210] When Bassus had settled these affairs, he marched hastily to the forest of Jarden, as it is called; for he had heard that a great many of those that had fled from Jerusalem and Macherus formerly were there gotten together. When he was therefore come to the place, and understood that the former news was no mistake, he, in the first place, surrounded the whole place with his horsemen, that such of the Jews as had boldness enough to try to break through might have no way possible for escaping, by reason of the situation of these horsemen; and for the footmen, he ordered them to cut down the trees that were in the wood whither they were fled. So the Jews were under a necessity of performing some glorious exploit, and of greatly exposing themselves in a battle, since they might perhaps thereby escape. So they made a general attack, and with a great shout fell upon those that surrounded them, who received them with great courage; and so while the one side fought desperately, and the others would not yield, the fight was prolonged on that account. But the event of the battle did not answer the expectation of the assailants; for so it happened, that no more than twelve fell on the Roman side, with a few that were wounded; but not one of the Jews escaped out of this battle, but they were all killed, being in the whole not fewer in number than three thousand, together with Judas, the son of Jairus, their general, concerning whom we have before spoken, that he had been a captain of a certain band at the siege of Jerusalem, and by going down into a certain vault under ground, had privately made his escape.