He continues;
God can only be known through a supernatural faculty. Christ made this clear when He said, "Except a man be born again, he cannot see the kingdom of God" (John 3:3). The unregenerate have no spiritual knowledge of God. "The natural man receives not the things of the Spirit of God: for they are foolishness unto him: neither can he know them, because they are spiritually discerned" (1 Cor. 2:14).
Water, of itself, never rises above its own level. So the natural man is incapable of perceiving that which transcends mere nature. "This is life eternal, that they might know you the only true God" (John 17:3). Eternal life must be imparted before the "true God" can be known. Plainly is this affirmed in 1 John 5:20, "We know that the Son of God is come, and has given us an understanding, that we may know Him that is true." Yes, an "understanding," a spiritual understanding, by new creation, must be given before God can be known in a spiritual way.
A supernatural knowledge of God produces a supernatural experience, and this is something to which multitudes of church members are total strangers. Most of the "religion" of the day is but a touching up of "old Adam." it is merely a garnishing of sepulchers full of corruption. It is an outward "form."
Even where there is a sound creed, only too often it is a dead orthodoxy. Nor should this be wondered at. It has ever been thus. It was so when Christ was here upon earth. The Jews were very orthodox. At that time they were free from idolatry. The temple stood at Jerusalem, the Law was expounded, Jehovah was worshiped. And yet Christ said to them, "He that sent me is true, whom you know not." (John 7:28). "You neither know me, nor my Father: if you had known me, you should have known my Father also" (John 8:19). "It is my Father that honors me; of whom you say, that he is your God. Yet you have not known him" (John 8:54,55). And mark it well, this is said to a people who had the Scriptures, searched them diligently, and venerated them as God’s Word! They were well acquainted with God theoretically, but a spiritual knowledge of Him they had not.