- Whether any created intellect can see the essence of God?
- Whether the essence of God is seen by the intellect through any created image?
- Whether the essence of God can be seen by the corporeal eye?
- Whether any created intellect by its natural powers can see the Divine essence?
- Whether the created intellect needs any created light in order to see the essence of God?
- Whether of those who see the essence of God, one sees more perfectly than another?
- Whether those who see the essence of God comprehend Him?
- Whether those who see the essence of God see all in God?
- Whether what is seen in God by those who see the Divine essence, is seen through any similitude?
- Whether those who see the essence of God see all they see in it at the same time?
- Whether anyone in this life can see the essence of God?
- Whether God can be known in this life by natural reason?
- Whether by grace a higher knowledge of God can be obtained than by natural reason?
- Whether in God the essence is the same as the person?
- Whether it must be said that the three persons are of one essence?
- Whether essential names should be predicated in the singular of the three persons?
- Whether the concrete essential names can stand for the person?
- Whether abstract essential names can stand for the person?
[Q12 / A5]
Objection 1: It seems that the created intellect does not need any created light in order to see the essence of God. For what is of itself lucid in sensible things does not require any other light in order to be seen. Therefore the same applies to intelligible things. Now God is intelligible light. Therefore He is not seen by means of any created light.
Reply: The created light is necessary to see the essence of God, not in order to make the essence of God intelligible, which is of itself intelligible, but in order to enable the intellect to understand in the same way as a habit makes a power abler to act. Even so corporeal light is necessary as regards external sight, inasmuch as it makes the medium actually transparent, and susceptible of color.
Objection 2: Further, if God is seen through a medium, He is not seen in His essence. But if seen by any created light, He is seen through a medium. Therefore He is not seen in His essence.
Reply: This light is required to see the divine essence, not as a similitude in which God is seen, but as a perfection of the intellect, strengthening it to see God. Therefore it may be said that this light is to be described not as a medium in which God is seen, but as one by which He is seen; and such a medium does not take away the immediate vision of God.
Objection 3: Further, what is created can be natural to some creature. Therefore if the essence of God is seen through any created light, such a light can be made natural to some other creature; and thus, that creature would not need any other light to see God; which is impossible. Therefore it is not necessary that every creature should require a superadded light in order to see the essence of God.
Reply: The disposition to the form of fire can be natural only to the subject of that form. Hence the light of glory cannot be natural to a creature unless the creature has a divine nature; which is impossible. But by this light the rational creature is made deiform, as is said in this article.