Belief in a personal God, accordingly, is both natural and normal; it arises in human consciousness spontaneously and universally. But atheism, even the denial of the existence of a personal God, is the exception. It is philosophy, not religion. There is truth in Schopenhauer’s stinging statement: “An impersonal God is no God at all. It is no more than a misused word, a misconception, a contradiction in terms, a shibboleth for professors of philosophy who, after having had to abandon the thing itself, sneak through with the word.” It therefore requires a certain effort not to believe in a personal God: “No one disbelieves the existence of God except the person to whom God’s existence is not convenient.” There are no atheists so thoroughly sure of their unbelief as to be willing to die a martyr’s death for it. Since atheism is abnormal and unnatural, based not on intuitions but on inferential proofs and fallible reasoning, it is never sure of its causes. The arguments for the existence of God may be weak, but in any case they are stronger than those advanced for its denial. It is even impossible to prove that there is no God. To accomplish that feat a person would have to be omniscient and omnipresent, that is, to be God!.
Reformed Dogmatics Vol. 2: God and Creation John Bolt and John Vriend (Grand Rapids, MI; Baker Academic; 2004) p. 58-59.