City of God

This is prescribed by the order of nature: it is thus that God has created man. For “let them,” He says, “have dominion over the fish of the sea, and over the fowl of the air, and over every creeping thing which creeps on the earth.” He did not intend that His rational creature, who was made in His image, should have dominion over anything but the irrational creation,— not man over man, but man over the beasts. And hence the righteous men in primitive times were made shepherds of cattle rather than kings of men, God intending thus to teach us what the relative position of the creatures is, and what the desert of sin; for it is with justice, we believe, that the condition of slavery is the result of sin.

And this is why we do not find the word “slave” in any part of Scripture until righteous Noah branded the sin of his son with this name. It is a name, therefore, introduced by sin and not by nature. The origin of the Latin word for slave is supposed to be found in the circumstance that those who by the law of war were liable to be killed were sometimes preserved by their victors, and were hence called servants. And these circumstances could never have arisen save through sin.

For even when we wage a just war, our adversaries must be sinning; and every victory, even though gained by wicked men, is a result of the first judgment of God, who humbles the vanquished either for the sake of removing or of punishing their sins. Witness that man of God, Daniel, who, when he was in captivity, confessed to God his own sins and the sins of his people, and declares with pious grief that these were the cause of the captivity. The prime cause, then, of slavery is sin, which brings man under the dominion of his fellow—that which does not happen save by the judgment of God, with whom is no unrighteousness, and who knows how to award fit punishments to every variety of offense.

But our Master in heaven says, “Every one who does sin is the servant of sin.” And thus there are many wicked masters who have religious men as their slaves, and who are yet themselves in bondage; “for of whom a man is overcome, of the same is he brought in bondage.” And beyond question it is a happier thing to be the slave of a man than of a lust; for even this very lust of ruling, to mention no others, lays waste men's hearts with the most ruthless dominion. Moreover, when men are subjected to one another in a peaceful order, the lowly position does as much good to the servant as the proud position does harm to the master.

But by nature, as God first created us, no one is the slave either of man or of sin. This servitude is, however, penal, and is appointed by that law which enjoins the preservation of the natural order and forbids its disturbance; for if nothing had been done in violation of that law, there would have been nothing to restrain by penal servitude. And therefore the apostle admonishes slaves to be subject to their masters, and to serve them heartily and with good-will, so that, if they cannot be freed by their masters, they may themselves make their slavery in some sort free, by serving not in crafty fear, but in faithful love, until all unrighteousness pass away, and all principality and every human power be brought to nothing, and God be all in all.