God is not a being that exists by mere definition (as the ontological argument unsuccessfully tries to establish); nor is God a mere mental state, with no existence independent of people's minds (at least, not according to most theists); nor is God's existence a necessary proposition to make sense of the world (as the presuppositional argument tries and fails to claim). Therefore, we can safely conclude that God's existence is not a properly basic belief, but rather an empirical proposition about the external world; it can only be properly supported by evidence, not mere assertion
it may surprise them to learn that all the most commonly heard arguments for God's existence have been around in one form or another literally for centuries
all of them were refuted soon after they were first proposed
The Cosmological Argument
The Presuppositional Argument
clipped from: www.ebonmusings.org