Reply to Objection 1: Christ, by the power which He exercises in the sacraments, bestowed on the apostles the reality of this sacrament, i.e. the fulness of the Holy Ghost, without the sacrament itself, because they had received "the first fruits of the Spirit" (Rm. 8:23). Nevertheless, something of keeping with the matter of this sacrament was displayed to the apostles in a sensible manner when they received the Holy Ghost. For that the Holy Ghost came down upon them in a sensible manner under the form of fire, refers to the same signification as oil: except in so far as fire has an active power, while oil has a passive power, as being the matter and incentive of fire. And this was quite fitting: for it was through the apostles that the grace of the Holy Ghost was to flow forth to others. Again, the Holy Ghost came down on the apostles in the shape of a tongue. Which refers to the same signification as balm: except in so far as the tongue communicates with others by speech, but balm, by its odor. because, to wit, the apostles were filled with the Holy Ghost, as teachers of the Faith; but the rest of the believers, as doing that which gives edification to the faithful.
In like manner, too, when the apostles imposed their hands, and when they preached, the fulness of the Holy Ghost came down under visible signs on the faithful, just as, at the beginning, He came down on the apostles: hence Peter said (Acts 11:15): "When I had begun to speak, the Holy Ghost fell upon them, as upon us also in the beginning." Consequently there was no need for sacramental sensible matter, where God sent sensible signs miraculously.
However, the apostles commonly made use of chrism in bestowing the sacrament, when such like visible signs were lacking. For Dionysius says (Eccl. Hier. iv): "There is a certain perfecting operation which our guides," i.e. the apostles, "call the sacrifice of Chrism."
