No matter if you believe that all of existence began from nothing or it simply always existed, the absurdity of reason is inflates and the decay of logic blooms. If everything came from a primary non contingent cause such as a "God" then logic ceases to bear the same weight. On the other hand, if the universe always existed, there is the problem of infinite regress, which again causes the integrity of logic to stumble. The second premise also is extremely vulnerable to non logical occurrences and phenomenons in nature, happenings in which we call "miracles". Both scenarios imply some kind of transcendent understanding that defies reason and necessitates "faith" or conjecture as some of you like to say. TLDR: Reason mutates into Faith.