Whether a sacrament is always something sensible?
Objection 1: It seems that a sacrament is not always something sensible. Because, according to the Philosopher (Prior. Anal. ii), every effect is a sign of its cause. But just as there are some sensible effects, so are there some intelligible effects; thus science is the effect of a demonstration. Therefore not every sign is sensible. Now all that is required for a sacrament is something that is a sign of some sacred thing, inasmuch as thereby man is sanctified, as stated above (A 2). Therefore something sensible is not required for a sacrament.
Objection 2: Further, sacraments belong to the kingdom of God and the Divine worship. But sensible things do not seem to belong to the Divine worship: for we are told (Jn. 4:24) that "God is a spirit; and they that adore Him, must adore Him in spirit and in truth"; and (Rom. 14:17) that "the kingdom of God is not meat and drink." Therefore sensible things are not required for the sacraments.
Objection 3: Further. Augustine says (De Lib. Arb. ii) that "sensible things are goods of least account, since without them man can live aright." But the sacraments are necessary for man's salvation, as we shall show farther on (Q 61, A 1): so that man cannot live aright without them. Therefore sensible things are not required for the sacraments.
On the contrary, Augustine says (Tract. lxxx super Joan.): "The word is added to the element and this becomes a sacrament"; and he is speaking there of water which is a sensible element. Therefore sensible things are required for the sacraments.
I answer that, Divine wisdom provides for each thing according to its mode; hence it is written (Wis. 8:1) that "she . . . ordereth all things sweetly": wherefore also we are told (Mat. 25:15) that she "gave to everyone according to his proper ability." Now it is part of man's nature to acquire knowledge of the intelligible from the sensible. But a sign is that by means of which one attains to the knowledge of something else. Consequently, since the sacred things which are signified by the sacraments, are the spiritual and intelligible goods by means of which man is sanctified, it follows that the sacramental signs consist in sensible things: just as in the Divine Scriptures spiritual things are set before us under the guise of things sensible. And hence it is that sensible things are required for the sacraments; as Dionysius also proves in his book on the heavenly hierarchy (Coel. Hier. i).
Reply to Objection 1: The name and definition of a thing is taken principally from that which belongs to a thing primarily and essentially: and not from that which belongs to it through something else. Now a sensible effect being the primary and direct object of man's knowledge (since all our knowledge springs from the senses) by its very nature leads to the knowledge of something else: whereas intelligible effects are not such as to be able to lead us to the knowledge of something else, except in so far as they are manifested by some other thing, i.e. by certain sensibles. It is for this reason that the name sign is given primarily and principally to things which are offered to the senses; hence Augustine says (De Doctr. Christ. ii) that a sign "is that which conveys something else to the mind, besides the species which it impresses on the senses." But intelligible effects do not partake of the nature of a sign except in so far as they are pointed out by certain signs. And in this way, too, certain things which are not sensible are termed sacraments as it were, in so far as they are signified by certain sensible things, of which we shall treat further on (Q 63, A 1, ad 2; A 3, ad 2; Q 73, A 6; Q 74, A 1, ad 3).
Reply to Objection 2: Sensible things considered in their own nature do not belong to the worship or kingdom of God: but considered only as signs of spiritual things in which the kingdom of God consists.
Reply to Objection 3: Augustine speaks there of sensible things, considered in their nature; but not as employed to signify spiritual things, which are the highest goods.
III · Q. 60, Art. 5: Whether determinate things are required for a sacrament?
Whether determinate things are required for a sacrament?
Objection 1: It seems that determinate things are not required for a sacrament. For sensible things are required in sacraments for the purpose of signification, as stated above (A 4). But nothing hinders the same thing being signified by divers sensible things: thus in Holy Scripture God is signified metaphorically, sometimes by a stone (2 Kings 22:2; Zech. 3:9; 1 Cor. 10:4; Apoc. 4:3); sometimes by a lion (Is. 31:4; Apoc. 5:5); sometimes by the sun (Is. 60:19,20; Mal. 4:2), or by something similar. Therefore it seems that divers things can be suitable to the same sacrament. Therefore determinate things are not required for the sacraments.
Objection 2: Further, the health of the soul is more necessary than that of the body. But in bodily medicines, which are ordained to the health of the body, one thing can be substituted for another which happens to be wanting. Therefore much more in the sacraments, which are spiritual remedies ordained to the health of the soul, can one thing be substituted for another when this happens to be lacking.
Objection 3: Further, it is not fitting that the salvation of men be restricted by the Divine Law: still less by the Law of Christ, Who came to save all. But in the state of the Law of nature determinate things were not required in the sacraments, but were put to that use through a vow, as appears from Gn. 28, where Jacob vowed that he would offer to God tithes and peace-offerings. Therefore it seems that man should not have been restricted, especially under the New Law, to the use of any determinate thing in the sacraments.
On the contrary, our Lord said (Jn. 3:5): "Unless a man be born again of water and the Holy Ghost, he cannot enter into the kingdom of God."
I answer that, In the use of the sacraments two things may be considered, namely, the worship of God, and the sanctification of man: the former of which pertains to man as referred to God, and the latter pertains to God in reference to man. Now it is not for anyone to determine that which is in the power of another, but only that which is in his own power. Since, therefore, the sanctification of man is in the power of God Who sanctifies, it is not for man to decide what things should be used for his sanctification, but this should be determined by Divine institution. Therefore in the sacraments of the New Law, by which man is sanctified according to 1 Cor. 6:11, "You are washed, you are sanctified," we must use those things which are determined by Divine institution.
Reply to Objection 1: Though the same thing can be signified by divers signs, yet to determine which sign must be used belongs to the signifier. Now it is God Who signifies spiritual things to us by means of the sensible things in the sacraments, and of similitudes in the Scriptures. And consequently, just as the Holy Ghost decides by what similitudes spiritual things are to be signified in certain passages of Scripture, so also must it be determined by Divine institution what things are to be employed for the purpose of signification in this or that sacrament.
Reply to Objection 2: Sensible things are endowed with natural powers conducive to the health of the body: and therefore if two of them have the same virtue, it matters not which we use. Yet they are ordained unto sanctification not through any power that they possess naturally, but only in virtue of the Divine institution. And therefore it was necessary that God should determine the sensible things to be employed in the sacraments.
Reply to Objection 3: As Augustine says (Contra Faust. xix), diverse sacraments suit different times; just as different times are signified by different parts of the verb, viz. present, past, and future. Consequently, just as under the state of the Law of nature man was moved by inward instinct and without any outward law, to worship God, so also the sensible things to be employed in the worship of God were determined by inward instinct. But later on it became necessary for a law to be given (to man) from without: both because the Law of nature had become obscured by man's sins; and in order to signify more expressly the grace of Christ, by which the human race is sanctified. And hence the need for those things to be determinate, of which men have to make use in the sacraments. Nor is the way of salvation narrowed thereby: because the things which need to be used in the sacraments, are either in everyone's possession or can be had with little trouble.