Summa Theologica I-II, q. 102: Of the Causes of the Ceremonial Precepts
Article 5. Whether there can be any suitable cause for the sacraments of the Old Law?
Objection 1It would seem that there can be no suitable cause for the sacraments of the Old Law. Because those things that are done for the purpose of divine worship should not be like the observances of idolaters: since it is written (Dt. 12:31): "Thou shalt not do in like manner to the Lord thy God: for they have done to their gods all the abominations which the Lord abhorreth." Now worshippers of idols used to knive themselves to the shedding of blood: for it is related (3 Kings 18:28) that they "cut themselves after their manner with knives and lancets, till they were all covered with blood." For this reason the Lord commanded (Dt. 14:1): "You shall not cut yourselves nor make any baldness for the dead." Therefore it was unfitting for circumcision to be prescribed by the Law (Lev. 12:3).
Objection 2Further, those things which are done for the worship of God should be marked with decorum and gravity; according to Ps. 34:18: "I will praise Thee in a grave [Douay: 'strong'] people." But it seems to savor of levity for a man to eat with haste. Therefore it was unfittingly commanded (Ex. 12:11) that they should eat the Paschal lamb "in haste." Other things too relative to the eating of the lamb were prescribed, which seem altogether unreasonable.
Objection 3Further, the sacraments of the Old Law were figures of the sacraments of the New Law. Now the Paschal lamb signified the sacrament of the Eucharist, according to 1 Cor. 5:7: "Christ our Pasch is sacrificed." Therefore there should also have been some sacraments of the Old Law to foreshadow the other sacraments of the New Law, such as Confirmation, Extreme Unction, and Matrimony, and so forth.
Objection 4Further, purification can scarcely be done except by removing something impure. But as far as God is concerned, no bodily thing is reputed impure, because all bodies are God's creatures; and "every creature of God is good, and nothing to be rejected that is received with thanksgiving" (1 Tim. 4:4). It was therefore unfitting for them to be purified after contact with a corpse, or any similar corporeal infection.
Objection 5Further, it is written (Ecclus. 34:4): "What can be made clean by the unclean?" But the ashes of the red heifer which was burnt, were unclean, since they made a man unclean: for it is stated (Num. 19:7, seqq.) that the priest who immolated her was rendered unclean "until the evening"; likewise he that burnt her; and he that gathered up her ashes. Therefore it was unfittingly prescribed there that the unclean should be purified by being sprinkled with those cinders.
Objection 6Further, sins are not something corporeal that can be carried from one place to another: nor can man be cleansed from sin by means of something unclean. It was therefore unfitting for the purpose of expiating the sins of the people that the priest should confess the sins of the children of Israel on one of the buck-goats, that it might carry them away into the wilderness: while they were rendered unclean by the other, which they used for the purpose of purification, by burning it together with the calf outside the camp; so that they had to wash their clothes and their bodies with water (Lev. 16).
Objection 7Further, what is already cleansed should not be cleansed again. It was therefore unfitting to apply a second purification to a man cleansed from leprosy, or to a house; as laid down in Lev. 14.
Objection 8Further, spiritual uncleanness cannot be cleansed by material water or by shaving the hair. Therefore it seems unreasonable that the Lord ordered (Ex. 30:18, seqq.) the making of a brazen laver with its foot, that the priests might wash their hands and feet before entering the temple; and that He commanded (Num. 8:7) the Levites to be sprinkled with the water of purification, and to shave all the hairs of their flesh.
Objection 9Further, that which is greater cannot be cleansed by that which is less. Therefore it was unfitting that, in the Law, the higher and lower priests, as stated in Lev. 8, and the Levites, according to Num. 8, should be consecrated with any bodily anointing, bodily sacrifices, and bodily oblations.
Objection 10Further, as stated in 1 Kings 16:7, "Man seeth those things that appear, but the Lord beholdeth the heart." But those things that appear outwardly in man are the dispositions of his body and his clothes. Therefore it was unfitting for certain special garments to be appointed to the higher and lower priests, as related in Ex. 28. It seems, moreover, unreasonable that anyone should be debarred from the priesthood on account of defects in the body, as stated in Lev. 21:17, seqq.: "Whosoever of thy seed throughout their families, hath a blemish, he shall not offer bread to his God. . . if he be blind, if he be lame," etc. It seems, therefore, that the sacraments of the Old Law were unreasonable.
On the contraryIt is written (Lev. 20:8): "I am the Lord that sanctify you." But nothing unreasonable is done by God, for it is written (Ps. 103:24): "Thou hast made all things in wisdom." Therefore there was nothing without a reasonable cause in the sacraments of the Old Law, which were ordained to the sanctification of man.
I answer thatAs stated above (Q[101], A[4]), the sacraments are, properly speaking, things applied to the worshippers of God for their consecration so as, in some way, to depute them to the worship of God. Now the worship of God belonged in a general way to the whole people; but in a special way, it belonged to the priests and Levites, who were the ministers of divine worship. Consequently, in these sacraments of the Old Law, certain things concerned the whole people in general; while others belonged to the ministers.
In regard to both, three things were necessary. The first was to be established in the state of worshipping God: and this institution was brought about—for all in general, by circumcision, without which no one was admitted to any of the legal observances—and for the priests, by their consecration. The second thing required was the use of those things that pertain to divine worship. And thus, as to the people, there was the partaking of the paschal banquet, to which no uncircumcised man was admitted, as is clear from Ex. 12:43, seqq.: and, as to the priests, the offering of the victims, and the eating of the loaves of proposition and of other things that were allotted to the use of the priests. The third thing required was the removal of all impediments to divine worship, viz. of uncleannesses. And then, as to the people, certain purifications were instituted for the removal of certain external uncleannesses; and also expiations from sins; while, as to the priests and Levites, the washing of hands and feet and the shaving of the hair were instituted.