Of the Precepts of Justice

Of the Precepts of Justice — St. Thomas Aquinas asks: Whether the precepts of the decalogue are precepts of justice?; Whether the first precept of the decalogue is fittingly expressed?; Whether the second precept of the decalogue is fittingly expressed?; Whether the third precept of the decalogue, concerning the hallowing of the Sabbath, is fittingly expressed?; Whether the fourth precept, about honoring one's parents, is fittingly expressed?; Whether the other six precepts of the decalogue are fittingly expressed?.

We must now consider the precepts of justice, under which head there are six points of inquiry:

Article 1: Whether the precepts of the decalogue are precepts of justice?

Seemingly justice is the sole virtue whereby we are directed to another. Now we are directed to another by all the precepts of the decalogue, as is evident if one consider each of them. Therefore all the precepts of the decalogue pertain to justice.

The precepts of the decalogue are the first principles of the Law: and the natural reason assents to them at once, as to principles that are most evident. Now it is altogether evident that the notion of duty, which is essential to a precept, appears in justice, which is of one towards another. Because in those matters that relate to himself it would seem at a glance that man is master of himself, and that he may do as he likes: whereas in matters that refer to another it appears manifestly that a man is under obligation to render to another that which is his due. Hence the precepts of the decalogue must needs pertain to justice. Wherefore the first three precepts are about acts of religion, which is the chief part of justice; the fourth precept is about acts of piety, which is the second part of justice; and the six remaining are about justice commonly so called, which is observed among equals.

Article 2: Whether the first precept of the decalogue is fittingly expressed?

stands the authority of Scripture.

It pertains to law to make men good, wherefore it behooved the precepts of the Law to be set in order according to the order of generation, the order, to wit, of man's becoming good. Now two things must be observed in the order of generation. The first is that the first part is the first thing to be established; thus in the generation of an animal the first thing to be formed is the heart, and in building a home the first thing to be set up is the foundation: and in the goodness of the soul the first part is goodness of the will, the result of which is that a man makes good use of every other goodness. Now the goodness of the will depends on its object, which is its end. Wherefore since man was to be directed to virtue by means of the Law, the first thing necessary was, as it were, to lay the foundation of religion, whereby man is duly directed to God, Who is the last end of man's will.

The second thing to be observed in the order of generation is that in the first place contraries and obstacles have to be removed. Thus the farmer first purifies the soil, and afterwards sows his seed, according to Jer. 4:3, "Break up anew your fallow ground, and sow not upon thorns." Hence it behooved man, first of all to be instructed in religion, so as to remove the obstacles to true religion. Now the chief obstacle to religion is for man to adhere to a false god, according to Mat. 6:24, "You cannot serve God and mammon." Therefore in the first precept of the Law the worship of false gods is excluded.

Article 3: Whether the second precept of the decalogue is fittingly expressed?

stands the authority of Scripture.

In one who is being instructed in virtue it is necessary to remove obstacles to true religion before establishing him in true religion. Now a thing is opposed to true religion in two ways. First, by excess, when, to wit, that which belongs to religion is given to others than to whom it is due, and this pertains to superstition. Secondly, by lack, as it were, of reverence, when, to wit, God is contemned, and this pertains to the vice of irreligion, as stated above (, in the preamble, and in the Article that follows). Now superstition hinders religion by preventing man from acknowledging God so as to worship Him: and when a man's mind is engrossed in some undue worship, he cannot at the same time give due worship to God, according to Is. 28:20, "The bed is straitened, so that one must fall out," i.e. either the true God or a false god must fall out from man's heart, "and a short covering cannot cover both." On the other hand, irreligion hinders religion by preventing man from honoring God after he has acknowledged Him. Now one must first of all acknowledge God with a view to worship, before honoring Him we have acknowledged.

For this reason the precept forbidding superstition is placed before the second precept, which forbids perjury that pertains to irreligion.

Article 4: Whether the third precept of the decalogue, concerning the hallowing of the Sabbath, is fittingly expressed?

stands the authority of Scripture.

The obstacles to true religion being removed by the first and second precepts of the decalogue, as stated above (), it remained for the third precept to be given whereby man is established in true religion. Now it belongs to religion to give worship to God: and just as the Divine scriptures teach the interior worship under the guise of certain corporal similitudes, so is external worship given to God under the guise of sensible signs. And since for the most part man is induced to pay interior worship, consisting in prayer and devotion, by the interior prompting of the Holy Ghost, a precept of the Law as necessary respecting the exterior worship that consists in sensible signs. Now the precepts of the decalogue are, so to speak, first and common principles of the Law, and consequently the third precept of the decalogue describes the exterior worship of God as the sign of a universal boon that concerns all. This universal boon was the work of the Creation of the world, from which work God is stated to have rested on the seventh day: and sign of this we are commanded to keep holy seventh day---that is, to set it aside as a day to be given to God. Hence after the precept about the hallowing of the Sabbath the reason for it is given: "For in six days the Lord made heaven and earth . . . and rested on the seventh day."

Article 5: Whether the fourth precept, about honoring one's parents, is fittingly expressed?

stands the authority of Scripture.

The precepts of the decalogue are directed to the love of God and of our neighbor. Now to our parents, of all our neighbors, we are under the greatest obligation. Hence, immediately after the precepts directing us to God, a place is given to the precept directing us to our parents, who are the particular principle of our being, just as God is the universal principle: so that this precept has a certain affinity to the precepts of the First Table.

Article 6: Whether the other six precepts of the decalogue are fittingly expressed?

stands the authority of Scripture.

Just as by the parts of justice a man pays that which is due to certain definite persons, to whom he is bound for some special reason, so too by justice properly so called he pays that which is due to all in general. Hence, after the three precepts pertaining to religion, whereby man pays what is due God, and after the fourth precept pertaining to piety, whereby he pays what is due to his parents---which duty includes the paying of all that is due for any special reason---it was necessary in due sequence to give certain precepts pertaining to justice properly so called, which pays to all indifferently what is due to them.