Have you ever pondered the question : does God exist, or not?
A simple enough question, burdened with emotional and historical and ideological and hysterical doubts, fears, myths, fantasies, evasions, dogmatisms, etc. etc. Such coercive pressure, at many levels of society, applied to force people to take positions (regardless of free will or free thought).
Anyway, here are two books which I would use if I were setting up a course on this subject (which I may just do):
Richard Swinburne : The existence of God. 2nd ed. Oxford UP, 1991 (includes a brief rebuttal of arguments in Mackie's book, as follows).
J.L. Mackie : The miracle of theism. Oxford UP, 1982 (a response, from an atheist position, to 1st ed. of Swinburne's book - as well as a clear presentation of the various arguments for & against theism).