If you say: “Show me your God,” I will say to you: “Show me what kind of person you are, and I will show you my God.” Show me then whether the eyes of your mind can see, and the ears of your heart hear. God is seen by those who have the capacity to see him, provided that they keep the eyes of their mind open. All have eyes, but some have eyes that are shrouded in darkness, unable to see the light of the sun. Because the blind cannot see it, it does not follow that the sun does not shine. The blind must trace the cause back to themselves and their eyes. In the same way, you have eyes in your mind that are shrouded in darkness because of your sins and evil deeds.

But if you will you can be healed. Hand yourself over to the doctor, who will open the eyes of your mind and heart. Who is to be the doctor? It is God, who heals and gives life through his Word [Jesus] and wisdom.

—Theophilus, Bishop of Antioch, To Autolycus