He does not believe in himself; and as he does not believe in himself, he does not believe in God. His belief in God is mostly superficial. Numberless souls believe in God, and yet they know not if He really exists. They only believe because others believe in God. They have no proof, and they live their whole life without a proof of the belief in God. And there is no way of getting proof of God's existence, except by becoming acquainted with oneself; by experiencing the phenomena which are within one; and the greatest phenomenon that one can experience, which is one's heart.