Simeon bar Yochai was a 2nd-century tannaitic sage in ancient Israel, said to be active after the destruction of the Second Temple in 70 CE. He was one of the most eminent disciples of Rabbi Akiva, attributed by many Orthodox Jews with the authorship of the Zohar, the chief work of Kabbalah.
Background
According to a legend in the Babylonian Talmud, Rabbi Shimon bar Yohai criticized the Roman government and was forced to go into hiding with his son for thirteen years. They sheltered in a cave (which local tradition places in Peki'in). Next to the mouth of the cave a carob tree sprang up and a spring of fresh water gushed forth. Provided against hunger and thirst they cast off their clothing except during prayers to keep them from wearing out, embedded themselves in the sand up to their necks, and studied the Torah all day long. He and his son left the cave when they received a bat qol (divine revelation) saying that the Roman emperor had died and consequently all his decrees were abolished.
Career
His master was executed by Hadrian, and Simon's anti-Roman sentiments led to his own condemnation by Varus c. 161 a. d. (according to Graetz). He escaped this doom and dwelt for some years in a cavern. Emerging from concealment, Simon settled in Tiberias and in other Galilean cities. He acquired a reputation as a worker of miracles, and on this ground was sent to Rome as an envoy, where (legend tells) he exorcised from the emperor's daughter a demon who had obligingly entered the lady to enable Simon to effect his miracle. This Rabbi bore a large part in the fixation of law, and his decisions are frequently quoted. To him were attributed the important legal homilies called Sifre and Mekhilta (see Midrash), and above all the Zohar, the Bible of the Kabbalah (q. v. ). This latter ascription is altogether unfounded, the real author of this mystical commentary on the Pentateuch being Moses of Leon (q. v. ).
Religion
Some of his views were seemingly very hostile towards gentiles.