Dr. Faustus - class discussion

I feel that the most interesting part of the class discussion on Monday was about the many times that someone or something tried to convince Dr. Faustus to not perform black magic.  In every single scene from one to six, there was some form of hindrance being in the way of Faustus learning and performing black magic.  As repentance sets in, there seems to be no stopping Faustus on his journey to evil.  He manages to prepare an agreement for the Devil even though his blood congeals.  It seems as though Faustus's mindset of the issue of black magic resulted from an extreme wrong doing placed upon him previously in his lifetime.  He must feel betrayed somehow by the church or his religion since he could not refrain from continuing on his excursion of the dark side.