This book is a set of two works. The first is the master's thesis "AA Members' Beliefs in God and Analysis of Their Consistency with Christian Tradition: A Phenomenological Study". This empirical study dares to dig into a controversial question of the meanings of AA member's beliefs in Higher Power, or God. This qualitative study tries to explicate some of the commonalities by using the methodology of Interpretative Phenomenological Analysis. It does not claim to form a reliable theory but rather to provide a frame for forming a testable hypothesis grounded in the empirical research. The second work is a short article "Quasi-fideism: is religious relativism inevitable?" It bears some more controversial speculations. I attempt to analyse the results of the previous study from an epistemological point of view. Again, it is not an attempt to assert the sole explanation of the phenomenon of AA spirituality. It rather aims to build an argument in support of a possibility of deeper layers underlying the ability of AA members to overcome religious and social differences.