18.

And for the purpose of showing this, when we stand at prayer, we turn to the east, whence the heaven rises: not as if God also were dwelling there, in the sense that He who is everywhere present, not as occupying space, but by the power of His majesty, had forsaken the other parts of the world; but in order that the mind may be admonished to turn to a more excellent nature, i.e. to God, when its own body, which is earthly, is turned to a more excellent body, i.e. to a heavenly one. It is also suitable for the different stages of religion, and expedient in the highest degree, that in the minds of all, both small and great, there should be cherished worthy conceptions of God. And therefore, as regards those who as yet are taken up with the beauties that are seen, and cannot think of anything incorporeal, inasmuch as they must necessarily prefer heaven to earth, their opinion is more tolerable, if they believe God, whom as yet they think of after a corporeal fashion, to be in heaven rather than upon earth: so that when at any future time they have learned that the dignity of the soul exceeds even a celestial body, they may seek Him in the soul rather than in a celestial body even; and when they have learned how great a distance there is between the souls of sinners and of the righteous, just as they did not venture, when as yet they were wise only after a carnal fashion, to place Him on earth, but in heaven, so afterwards with better faith or intelligence they may seek Him again in the souls of the righteous rather than in those of sinners. Hence, when it is said, "Our Father which art in heaven," it is rightly understood to mean in the hearts of the righteous, as it were in His holy temple. And at the same time, in such a way that he who prays wishes Him whom he invokes to dwell in himself also; and when he strives after this, practises righteousness,--a kind of service by which God is attracted to dwell in the soul.