HKB
knowledge in the generic acceptation of the term: it is not thus that knowledge is a special gift, but according as it is restricted to judgments formed through created things.
Reply Obj. 3: As stated above (Q. 1, A. 1), every cognitive habit regards formally the mean through which things are known, and materially, the things that are known through the mean. And since that which is formal, is of most account, it follows that those sciences which draw conclusions about physical matter from mathematical principles, are reckoned rather among the mathematical sciences, though, as to their matter they have more in common with physical sciences: and for this reason it is stated in Phys. ii, 2 that they are more akin to physics. Accordingly, since man knows God through His creatures, this seems to pertain to "knowledge," to which it belongs formally, rather than to "wisdom," to which it belongs materially: and, conversely, when we judge of creatures according to Divine things, this pertains to "wisdom" rather than to "knowledge."
THIRD ARTICLE [II-II, Q. 9, Art. 3]
Whether the Gift of Knowledge Is Practical Knowledge?
Objection 1: It would seem that the knowledge, which is numbered among the gifts, is practical knowledge. For Augustine says (De Trin. xii, 14) that "knowledge is concerned with the actions in which we make use of external things." But the knowledge which is concerned about actions is practical. Therefore the gift of knowledge is practical.
Obj. 2: Further, Gregory says (Moral. i, 32): "Knowledge is nought if it hath not its use for piety . . . and piety is very useless if it lacks the discernment of knowledge." Now it follows from this authority that knowledge directs piety. But this cannot apply to a speculative science. Therefore the gift of knowledge is not speculative but practical.
Obj. 3: Further, the gifts of the Holy Ghost are only in the righteous, as stated above (Q. 9, A. 5). But speculative knowledge can be also in the unrighteous, according to James 4:17: "To him . . . who knoweth to do good, and doth it not, to him it is a sin." Therefore the gift of knowledge is not speculative but practical.
On the contrary, Gregory says (Moral. i, 32): "Knowledge on her own day prepares a feast, because she overcomes the fast of ignorance in the mind." Now ignorance is not entirely removed, save by both kinds of knowledge, viz. speculative and practical. Therefore the gift of knowledge is both speculative and practical.
I answer that, As stated above (Q. 9, A. 8), the gift of knowledge, like the gift of understanding, is ordained to the certitude of faith. Now faith consists primarily and principally in speculation, in as much as it is founded on the First Truth. But since the First Truth is also the last end for the sake of which our works are done, hence it is that faith extends to works, according to Gal. 5:6: "Faith . . . worketh by charity."
The consequence is that the gift of knowledge also, primarily and principally indeed, regards speculation, in so far as man knows what he ought to hold by faith; yet, secondarily, it extends to works, since we are directed in our actions by the knowledge of matters of faith, and of conclusions drawn therefrom.
Reply Obj. 1: Augustine is speaking of the gift of knowledge, in so far as it extends to works; for action is ascribed to knowledge, yet not action solely, nor primarily: and in this way it directs piety.
Hence the Reply to the Second Objection is clear.