I was just wondering if anyone could steer me towards any pertinent literature on Heidegger and religion/theology or (what I have discovered some call) his phenomenology of religion.  I believe I want to direct a research paper towards that idea although I am not sure in what way yet.  I thought I had detected some religious or mystic inclinations in Division I of Being and Time in placing so much importance on the Being of Dasein (perhaps, his twisted re-interpretation of the soul?) but, after reading the sections on death (in Being and Time), it seems that that interpretation may be a little off (considering he dispels any notion of an afterlife or immortality in his thought).  But I can't help but think a man who was so religious in his upbringing and early academic years could shake off religious notions completely albeit in a fierce rejection of them or in an underlying acceptance.

Any thoughts and/or references to materials?

P.S.  I am an undergrad senior with only Being and Time and Introduction to Metaphysics "under my belt" without much familiarity with his later thought.