The Arizal says that Hevel was reincarnated many times to purify his sin. What was his sin?
There is a famous dictum: 'lo ba'shomayim he', meaning that after the torah was given at Sinai its rules, mandates and precepts are determined by man and not dictated by heaven. An example is when ...
It says in Sforim that one shouldn't learn Kabbalah from any of the students of the Arizal except for R' Chaim Vital (as they didn't understand the Arizal properly). I have never seen such a worry ...