Reply to Objection 3: Two things are to be observed in the hallowing of the Sabbath. One of these is the end: and this is that man occupy himself with Divine things, and is signified in the words: "Remember that thou keep holy the Sabbath day." For in the Law those things are said to be holy which are applied to the Divine worship. The other thing is cessation from work, and is signified in the words (Ex. 20:11), "On the seventh day . . . thou shalt do no work." The kind of work meant appears from Lev. 23:3, "You shall do no servile work on that day [*Vulg.: 'You shall do no work on that day']." Now servile work is so called from servitude: and servitude is threefold. One, whereby man is the servant of sin, according to Jn. 8:34, "Whosoever committeth sin is the servant of sin," and in this sense all sinful acts are servile. Another servitude is whereby one man serves another. Now one man serves another not with his mind but with his body, as stated above (Question [104], Articles [5],6, ad 1). Wherefore in this respect those works are called servile whereby one man serves another. The third is the servitude of God; and in this way the work of worship, which pertains to the service of God, may be called a servile work. In this sense servile work is not forbidden on the Sabbath day, because that would be contrary to the end of the Sabbath observance: since man abstains from other works on the Sabbath day in order that he may occupy himself with works connected with God's service. For this reason, according to Jn. 7:23, "a man [*Vulg.: 'If a man,' etc.] receives circumcision on the Sabbath day, that the law of Moses may not be broken": and for this reason too we read (Mt. 12:5), that "on the Sabbath days the priests in the temple break the Sabbath," i.e. do corporal works on the Sabbath, "and are without blame." Accordingly, the priests in carrying the ark on the Sabbath did not break the precept of the Sabbath observance. In like manner it is not contrary to the observance of the Sabbath to exercise any spiritual act, such as teaching by word or writing. Wherefore a gloss on Num 28 says that "smiths and like craftsmen rest on the Sabbath day, but the reader or teacher of the Divine law does not cease from his work. Yet he profanes not the Sabbath, even as the priests in the temple break the Sabbath, and are without blame." On the other hand, those works that are called servile in the first or second way are contrary to the observance of the Sabbath, in so far as they hinder man from applying himself to Divine things. And since man is hindered from applying himself to Divine things rather by sinful than by lawful albeit corporal works, it follows that to sin on a feast day is more against this precept than to do some other but lawful bodily work. Hence Augustine says (De decem chord. iii): "It would be better if the Jew did some useful work on his farm than spent his time seditiously in the theatre: and their womenfolk would do better to be making linen on the Sabbath than to be dancing lewdly all day in their feasts of the new moon." It is not, however, against this precept to sin venially on the Sabbath, because venial sin does not destroy holiness.
Again, corporal works, not pertaining to the spiritual worship of God, are said to be servile in so far as they belong properly to servants; while they are not said to be servile, in so far as they are common to those who serve and those who are free. Moreover, everyone, be he servant or free, is bound to provide necessaries both for himself and for his neighbor, chiefly in respect of things pertaining to the well-being of the body, according to Prov. 24:11, "Deliver them that are led to death": secondarily as regards avoiding damage to one's property, according to Dt. 22:1, "Thou shalt not pass by if thou seest thy brother's ox or his sheep go astray, but thou shalt bring them back to thy brother." Hence a corporal work pertaining to the preservation of one's own bodily well-being does not profane the Sabbath: for it is not against the observance of the Sabbath to eat and do such things as preserve the health of the body. For this reason the Machabees did not profane the Sabbath when they fought in self-defense on the Sabbath day (1 Macc. 2), nor Elias when he fled from the face of Jezabel on the Sabbath. For this same reason our Lord (Mt. 12:3) excused His disciples for plucking the ears of corn on account of the need which they suffered. In like manner a bodily work that is directed to the bodily well-being of another is not contrary to the observance of the Sabbath: wherefore it is written (Jn. 7:23): "Are you angry at Me because I have healed the whole man on the Sabbath day?" And again, a bodily work that is done to avoid an imminent damage to some external thing does not profane the Sabbath, wherefore our Lord says (Mt. 12:11): "What man shall there be among you, that hath one sheep, and if the same fall into a pit on the Sabbath day, will he not take hold on it and lift it up?"
