Objection 3: Further, Augustine (De Civ. Dei vi, 10) commends Seneca for finding fault with those who offered to idols those things that are wont to be offered to men, because, to wit, that which befits mortals is unbecoming to immortals. But such things are much less becoming to the true God, Who is "exalted above all gods" [* Ps. 94:3 ]. Therefore it would seem wrong to worship God with bodily actions. Therefore religion has no bodily actions.
On the contrary, It is written ( Ps. 83:3 ): "My heart and my flesh have rejoiced in the living God." Now just as internal actions belong to the heart, so do external actions belong to the members of the flesh. Therefore it seems that God ought to be worshiped not only by internal but also by external actions.
I answer that, We pay God honor and reverence, not for His sake (because He is of Himself full of glory to which no creature can add anything), but for our own sake, because by the very fact that we revere and honor God, our mind is subjected to Him; wherein its perfection consists, since a thing is perfected by being subjected to its superior, for instance the body is perfected by being quickened by the soul, and the air by being enlightened by the sun. Now the human mind, in order to be united to God, needs to be guided by the sensible world, since "invisible things . . . are clearly seen, being understood by the things that are made," as the Apostle says ( Rom. 1:20 ). Wherefore in the Divine worship it is necessary to make use of corporeal things, that man's mind may be aroused thereby, as by signs, to the spiritual acts by means of which he is united to God. Therefore the internal acts of religion take precedence of the others and belong to religion essentially, while its external acts are secondary, and subordinate to the internal acts.
Reply to Objection 1: Our Lord is speaking of that which is most important and directly intended in the worship of God.
Reply to Objection 2: These external things are offered to God, not as though He stood in need of them, according to Ps. 49:13, "Shall I eat the flesh of bullocks? or shall I drink the blood of goats?" but as signs of the internal and spiritual works, which are of themselves acceptable to God. Hence Augustine says (De Civ. Dei x, 5): "The visible sacrifice is the sacrament or sacred sign of the invisible sacrifice."
Reply to Objection 3: Idolaters are ridiculed for offering to idols things pertaining to men, not as signs arousing them to certain spiritual things, but as though they were of themselves acceptable to the idols; and still more because they were foolish and wicked.
Whether religion is the same as sanctity?
Objection 1: It would seem that religion is not the same as sanctity. Religion is a special virtue, as stated above (A[4]): whereas sanctity is a general virtue, because it makes us faithful, and fulfil our just obligations to God, according to Andronicus [*De Affectibus]. Therefore sanctity is not the same as religion.
Objection 2: Further, sanctity seems to denote a kind of purity. For Dionysius says (Div. Nom. xii) that "sanctity is free from all uncleanness, and is perfect and altogether unspotted purity." Now purity would seem above all to pertain to temperance which repels bodily uncleanness. Since then religion belongs to justice, it would seem that sanctity is not the same as religion.
Objection 3: Further, things that are opposite members of a division are not identified with one another. But in an enumeration given above (Q[80], ad 4) of the parts of justice, sanctity is reckoned as distinct from religion. Therefore sanctity is not the same as religion.
On the contrary, It is written ( Luke 1:74 , 75 ): "That . . . we may serve Him . . . in holiness and justice." Now, "to serve God" belongs to religion, as stated above (A[1], ad 3; A[3], ad 2). Therefore religion is the same as sanctity.
I answer that, The word "sanctity" seems to have two significations. In one way it denotes purity; and this signification fits in with the Greek, for means "unsoiled." In another way it denotes firmness, wherefore in olden times the term "sancta" was applied to such things as were upheld by law and were not to be violated. Hence a thing is said to be sacred [sancitum] when it is ratified by law. Again, in Latin, this word "sanctus" may be connected with purity, if it be resolved into "sanguine tinctus, since, in olden times, those who wished to be purified were sprinkled with the victim's blood," according to Isidore (Etym. x). In either case the signification requires sanctity to be ascribed to those things that are applied to the Divine worship; so that not only men, but also the temple, vessels and such like things are said to be sanctified through being applied to the worship of God. For purity is necessary in order that the mind be applied to God, since the human mind is soiled by contact with inferior things, even as all things depreciate by admixture with baser things, for instance, silver by being mixed with lead. Now in order for the mind to be united to the Supreme Being it must be withdrawn from inferior things: and hence it is that without purity the mind cannot be applied to God. Wherefore it is written ( Heb. 12:14 ): "Follow peace with all men, and holiness, without which no man shall see God." Again, firmness is required for the mind to be applied to God, for it is applied to Him as its last end and first beginning, and such things must needs be most immovable. Hence the Apostle said ( Rom. 8:38 , 39 ): "I am sure that neither death, nor life . . . shall separate me [*Vulg.: 'shall be able to separate us'] from the love of God."
Accordingly, it is by sanctity that the human mind applies itself and its acts to God: so that it differs from religion not essentially but only logically. For it takes the name of religion according as it gives God due service in matters pertaining specially to the Divine worship, such as sacrifices, oblations, and so forth; while it is called sanctity, according as man refers to God not only these but also the works of the other virtues, or according as man by means of certain good works disposes himself to the worship of God
Reply to Objection 1: Sanctity is a special virtue according to its essence; and in this respect it is in a way identified with religion. But it has a certain generality, in so far as by its command it directs the acts of all the virtues to the Divine good, even as legal justice is said to be a general virtue, in so far as it directs the acts of all the virtues to the common good.
Reply to Objection 2: Temperance practices purity, yet not so as to have the character of sanctity unless it be referred to God. Hence of virginity itself Augustine says (De Virgin. viii) that "it is honored not for what it is, but for being consecrated to God."
Reply to Objection 3: Sanctity differs from religion as explained above, not really but logically.