Both Josephus and later Jewish sources from the Roman-Byzantine period mention the fine olive oil for which the village was known. According to the
Talmud, the inhabitants also engaged in the production of silk. Gischala was the home of Yohanan Ben-Levi of
Gush Halav, better known as
John of Giscala, a wealthy olive oil merchant who became a chief
Zealot commander in the Jewish revolt in the Galilee and later
Jerusalem. According to Josephus, John of Giscala was eager for rebellion and upgraded the town's fortifications. In one account Josephus writes that John fortified the town on Josephus' instructions, but in another he writes that John was hostile to the main Judean government, which Josephus represented in the Galilee, and undertook the fortifications at his own expense. Josephus includes the town in the list of 17 strategic fortifications undertaken in the wake of the revolt, suggesting the high importance of Gush Halav as a military fortress. After the fall of
Gamla and
Jotapata in 67, Gush Halav was the last Jewish stronghold in the
Galilee and
Golan region during northern phase of the revolt. ==Siege==