According to Wikipedia, the Sassanids were aided in their brief conquest and occupation of Palestine by local Jews. Civilian control was given to the Jews and plans were made for construction of the Third Temple. Assuming the Sassanids can keep the Byzantines out of Palestine what are the long term effects on Judaism and it's relationship with Christianity and Zoroastrianism. Do the Crusades start earlier than OTL? I'm assuming Islam doesn't arise or conquest aborted by a more powerful Sassanid empire.