Flavius Josephus, The Life of Flavius Josephus
William Whiston, A.M., Ed.

[199] Now, when they had given Jonathan and his companions these instructions, they gave them forty thousand [drachmae] out of the public money: but when they heard that there was a certain Galilean that then sojourned at Jerusalem, whose name was Jesus, who had about him a band of six hundred armed men, they sent for him, and gave him three months pay, and gave him orders to follow Jonathan and his companions, and be obedient to them. They also gave money to three hundred men that were citizens of Jerusalem, to maintain them all, and ordered them also to follow the ambassadors; and when they had complied, and were gotten ready for the march, Jonathan and his companions went out with them, having along with them John's brother and a hundred armed men. The charge that was given them by those that sent them was this: That if I would voluntarily lay down my arms, they should send me alive to the city of Jerusalem; but that, in case I opposed them, they should kill me, and fear nothing; for that it was their command for them so to do. They also wrote to John to make all ready for fighting me, and gave orders to the inhabitants of Sepphoris, and Gabara, and Tiberins, to send auxiliaries to John.