12. The common idea of God among ordinary Christians is one of a person, because God is called a person in the Athanasian doctrine of the Trinity. But those who are more sophisticated than ordinary people declare God to be invisible, and they do so because they cannot comprehend how God as a person could have created heaven and earth, filled the universe with His presence, and more-matters which cannot fall within the grasp of the intellect so long as it remains unknown that the Divine does not exist in space. In contrast, people who go to the Lord alone think of His Divine Humanity, thus of God as a person.