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

[420] BUT when Demetrius was informed of the death of Nicanor, and of the destruction of the army that was with him, he sent Bacchides again with an army into Judea, who marched out of Antioch, and came into Judea, and pitched his camp at Arbela, a city of Galilee; and having besieged and taken those that were there in caves, (for many of the people fled into such places,) he removed, and made all the haste he could to Jerusalem. And when he had learned that Judas had pitched his camp at a certain village whose name was Bethzetho, he led his army against him: they were twenty thousand foot-men, and two thousand horsemen. Now Judas had no more soldiers than one thousand. ¹ When these saw the multitude of Bacchides's men, they were afraid, and left their camp, and fled all away, excepting eight hundred. Now when Judas was deserted by his own soldiers, and the enemy pressed upon him, and gave him no time to gather his army together, he was disposed to fight with Bacchides's army, though he had but eight hundred men with him; so he exhorted these men to undergo the danger courageously, and encouraged them to attack the enemy. And when they said they were not a body sufficient to fight so great an army, and advised that they should retire now, and save themselves and that when he had gathered his own men together, then he should fall upon the enemy afterwards, his answer was this: "Let not the sun ever see such a thing, that I should show my back to the enemy and although this be the time that will bring me to my end, and I must die in this battle, I will rather stand to it courageously, and bear whatsoever comes upon me, than by now running away bring reproach upon my former great actions, or tarnish their glory." This was the speech he made to those that remained with him, whereby he encouraged them to attack the enemy.