who came first, the chicken or the egg?

if every religion defines his god as the true one, and if there are many religions, can there be a true god? or are they all fakes? after all, even those who believe, for example, in jesus christ, believe in many different ways. how can this be, if god is, as it is said, only one? centuries of theories, of doubts, of religious wars, just to end up without knowing anything but one thing: by this time, even god doesn't know whether he created mankind, of if it was mankind who created god. and just as the old chicken and egg paradox, that question is meant to remain unaswered.

after all, in one thing all religions and cults agree: it is all a matter of belief.