Gregory: Hom. xxvi in Evang.]: he saw the Man, and believing Him to
be God, he made profession of his faith, saying: "My Lord and my God."

Reply Obj. 2: Those things which come under faith can be considered
in two ways. First, in particular; and thus they cannot be seen and
believed at the same time, as shown above. Secondly, in general, that
is, under the common aspect of credibility; and in this way they are
seen by the believer. For he would not believe unless, on the
evidence of signs, or of something similar, he saw that they ought to
be believed.

Reply Obj. 3: The light of faith makes us see what we believe. For
just as, by the habits of the other virtues, man sees what is
becoming to him in respect of that habit, so, by the habit of faith,
the human mind is directed to assent to such things as are becoming
to a right faith, and not to assent to others.

Reply Obj. 4: Hearing is of words signifying what is of faith, but
not of the things themselves that are believed; hence it does not
follow that these things are seen.
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FIFTH ARTICLE [II-II, Q. 1, Art. 5]

Whether Those Things That Are of Faith Can Be an Object of Science
[*Science is certain knowledge of a demonstrated conclusion through
its demonstration]?

Objection 1: It would seem that those things that are of faith can be
an object of science. For where science is lacking there is