This article argues that both the arguments--that "God exists" and that "God does not exist"--fall within the realm of belief, and hence, religion; for the existence of God cannot be proved or disproved. It stresses that atheism is not a belief in the non-existence of God but an inability to believe in the existence of God. Finally, the essay sets out to examine if there can be an atheistic defence of the concept (not existence, which cannot be proved) of God, and concludes by arguing that it is the only kind of defence of God that is rationally possible.