Whether by grace a higher knowledge of God can be obtained than by natural reason?

Objections

Objection 1 : It seems that by grace a higher knowledge of God is not obtained than by natural reason. For Dionysius says (De Mystica Theol. i) that whoever is the more united to God in this life, is united to Him as to one entirely unknown. He says the same of Moses, who nevertheless obtained a certain excellence by the knowledge conferred by grace. But to be united to God while ignoring of Him "what He is," comes about also by natural reason. Therefore God is not more known to us by grace than by natural reason.
Objection 2 : Further, we can acquire the knowledge of divine things by natural reason only through the imagination; and the same applies to the knowledge given by grace. For Dionysius says (Coel. Hier. i) that "it is impossible for the divine ray to shine upon us except as screened round about by the many colored sacred veils." Therefore we cannot know God more fully by grace than by natural reason.
Objection 3 : Further, our intellect adheres to God by grace of faith. But faith does not seem to be knowledge; for Gregory says (Hom. xxvi in Ev.) that "things not seen are the objects of faith, and not of knowledge." Therefore there is not given to us a more excellent knowledge of God by grace.