shall arise false Christs and false prophets, and shall show great signs and wonders." Therefore it would seem that the working of miracles does not belong to a gratuitous grace.
Obj. 3: Further, miracles are divided into "signs," "wonders" or "portents," and "virtues." [*Cf. 2 Thess. 2:9, where the Douay version renders virtus by "power." The use of the word "virtue" in the sense of a miracle is now obsolete, and the generic term "miracle" is elsewhere used in its stead: Cf. 1 Cor. 12:10, 28; Heb. 2:4; Acts 2:22]. Therefore it is unreasonable to reckon the "working of miracles" a gratuitous grace, any more than the "working of signs" and "wonders."
Obj. 4: Further, the miraculous restoring to health is done by the power of God. Therefore the grace of healing should not be distinguished from the working of miracles.
Obj. 5: Further, the working of miracles results from faith--either of the worker, according to 1 Cor. 13:2, "If I should have all faith, so that I could remove mountains," or of other persons for whose sake miracles are wrought, according to Matt. 13:58, "And He wrought not many miracles there, because of their unbelief." Therefore, if faith be reckoned a gratuitous grace, it is superfluous to reckon in addition the working of signs as another gratuitous grace.
On the contrary, The Apostle (1 Cor. 12:9, 10) says that among other gratuitous graces, "to another" is given "the grace of healing . . . to another, the working of miracles."
I answer that, As stated above (Q. 177, A. 1), the Holy Ghost provides sufficiently for the Church in matters profitable unto salvation, to which purpose the gratuitous graces are directed. Now just as the knowledge which a man receives from God needs to be brought to the knowledge of others through the gift of tongues and the grace of the word, so too the word uttered needs to be confirmed in order that it be rendered credible. This is done by the working of miracles, according to Mk. 16:20, "And confirming the word with signs that followed": and reasonably so. For it is natural to man to arrive at the intelligible truth through its sensible effects. Wherefore just as man led by his natural reason is able to arrive at some knowledge of God through His natural effects, so is he brought to a certain degree of supernatural knowledge of the objects of faith by certain supernatural effects which are called miracles. Therefore the working of miracles belongs to a gratuitous grace.
Reply Obj. 1: Just as prophecy extends to whatever can be known supernaturally, so the working of miracles extends to all things that can be done supernaturally; the cause whereof is the divine omnipotence which cannot be communicated to any creature. Hence it is impossible for the principle of working miracles to be a quality abiding as a habit in the soul. On the other hand, just as the prophet's mind is moved by divine inspiration to know something supernaturally, so too is it possible for the mind of the miracle worker to be moved to do something resulting in the miraculous effect which God causes by His power. Sometimes this takes place after prayer, as when Peter raised to life the dead Tabitha (Acts 9:40): sometimes without any previous prayer being expressed, as when Peter by upbraiding the lying Ananias and Saphira delivered them to death (Acts 5:4, 9). Hence Gregory says (Dial. ii, 30) that "the saints work miracles, sometimes by authority, sometimes by prayer." In either case, however, God is the principal worker, for He uses instrumentally either man's inward movement, or his speech, or some outward action, or again the bodily contact of even a dead body. Thus when Josue had said as though authoritatively (Josh. 10:12): "Move not, O sun, toward Gabaon," it is said afterwards (Josh. 10:14): "There was not before or after so long a day, the Lord obeying the voice of a man."