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

[122] But when John, the son of Levi, who, as we before told you, abode at Gischala, was informed how all things had succeeded to my mind, and that I was much in favor with those that were under me, as also that the enemy were greatly afraid of me, he was not pleased with it, as thinking my prosperity tended to his ruin. So he took up a bitter envy and enmity against me; and hoping, that if he could inflame those that were under me to hate me,. he should put an end to the prosperity I was in, he tried to persuade the inhabitants of Tiberias and of Sepphoris, (and for those of Gabara he supposed they would be also of the same mind with the others,) which were the greatest cities of Galilee, to revolt from their subjection to me, and to be of his party; and told them that he would command them better than I did. As for the people of Sepphoris, who belonged to neither of us, because they had chosen to be in subjection to the Romans, they did not comply with his proposal; and for those of Tiberias, they did not indeed so far comply as to make a revolt from under me, but they agreed to be his friends, while the inhabitants of Gabara did go over to John; and it was Simon that persuaded them so to do, one who was both the principal man in the city, and a particular friend and companion of John. It is true, these did not openly own the making a revolt, because they were in great fear of the Galileans, and had frequent experience of the good-will they bore to me; yet did they privately watch for a proper opportunity to lay snares for me; and indeed I thereby came into the greatest danger, on the occasion following.