"If ye had known me, ye should have known my Father also (John 14:7). Therefore, deists do not know God, in spite of the fact that they bear His name (Deus means God; from here comes the word deist), and reason eloquently about Him. There is no true God without the Son and without the Holy Spirit. He who believes in God, but does not confess Him as the Father of the Son, does not believe in a god that is the true God, but in some personal invention. The true God gave His Son, gave power to become the sons of God (John 1:12), loves them, and hears each of their prayers, for the sake of the Son. That is why he who has the Son has the Father; and he who does not have the Son, does not have the Father. No one comes to the Father except through the Son, and receives nothing from the Father, except through the Son. Apart from the Son there is no path to the true God; and he who thinks to invent Him is deluded."
- St. Theophan the Recluse