Neither the law of Moses, nor that given to Noah established any thing new, they were only a declaratory repetition of the law of nature, that had been obliterated by depraved custom. So that the shedding of blood in a criminal and wanton manner is the only act prohibited by those commandments. Thus every act of homicide does not amount to murder, but only that, which is committed with a wilful and malicious intention to destroy the life of an innocent person. As to what follows about blood being shed in return for blood, it seems to imply not a mere act of personal revenge, but the deliberate exercise of a perfect right, which may be thus explained; it is not unjust, according to the principles of nature that any one should suffer in proportion to the evil he has done, conformably to the judicial maxim of Rhadamanthus, that if any one himself suffers what he has done, it is but just and right. The same opinion is thus expressed by Seneca the father; "it is but a just retaliation for any one to suffer in his own person the evil which he intended to inflict upon another." From a sense of this natural justice, Cain knowing himself guilty of his brother's blood said, "whosoever finds me shall kill me." But as in those early times, when men were few, and aggressions rare, there was less occasion for examples, God restrained by an express commandment the impulse of nature which appeared lawful, he forbad any one to kill the murderer, at the same time prohibiting all intercourse with him, even so far as not to touch him.[6] Plato has established this in his laws, and the same rule prevailed in Greece, as appears from the following passage in Euripides, "our fathers of old did well in banishing from their intercourse and sight any one that had shed another's blood; imposing banishment by way of atonement, rather than inflicting death." We find Thucydides of the same opinion, "that anciently lighter punishments were inflicted for the greatest crimes; but in process of time, as those penalties came to be despised, legislators were obliged to have recourse to death in certain cases." We may add to the above instances the remark of Lactantius, that as yet it appeared a sin to punish even the most wicked men with death. The conjecture of the divine will taken from the remarkable instance of Cain, whom no one was permitted to kill passed into a law, so that Lanech, having perpetrated a similar deed, promised himself impunity from this example.--Gen. iv. 24.