Because it is contained in Scripture, "Behold, I lay in Zion a chief cornerstone, chosen, and precious: He who believes in him will not be disappointed."

 It would be wrong to think that the lot of slaves was always wretched and unhappy, and that they were always treated with cruelty. Many slaves were loved and trusted members of the family; but one great inescapable fact dominated the whole situation. In Roman law a slave was not a person but a thing; and he had absolutely no legal rights whatsoever. For that reason there could be no such thing as justice where a slave was concerned. Aristotle writes, "There can be no friendship nor justice towards inanimate things; indeed, not even towards a horse or an ox, nor yet towards a slave as a slave. For master and slave have nothing in common; a slave is a living tool, just as a tool is an inanimate slave." Varro divides the instruments of agriculture into three classes--the articulate, the inarticulate and the mute, "the articulate comprising the slaves, the inarticulate comprising the cattle, and the mute comprising the vehicles." The only difference between a slave and a beast or a farmyard cart was that a slave happened to be able to speak. Peter Chrysologus sums the matter up: "Whatever a master does to a slave, undeservedly, in anger, willingly, unwillingly, in forgetfulness, after careful thought, knowingly, unknowingly, is judgment, justice and law." In regard to a slave, his master's will, and even his master's caprice, was the only law. 