Ireneaus states that the Cainites regarded Cain as derived from the higher principle. They claimed fellowship with Esau, Korah, the men of Sodom, and all such people, and regarded themselves as persecuted by the Creator. But they escaped injury from him, because they were protected by the goddess Sophia. Epiphanius of Salamis, who appears to have some source of information independent of Irenaeus, gives a much longer account. He describes Abel as being derived from the weaker principle.
Redemption
Like other Gnostics, the Cainites distinguished between the Creator and the Supreme God. They identified the Creator with the God of the Jews, viewing him and those he favored with hostility and believing that the purpose of redemption was the dissolution of his work. They claimed kinship with those to whom he showed antagonism in the Old Testament but believed he was the weaker power and could do them no permanent harm, since they enjoyed the protection of Sophia. They presumably shared a Gnostic belief in the division of mankind into two classes: the spiritual and the material. Material people belonged to the realm of the Creator and derived their being from him but were doomed to destruction. Spiritual men were imprisoned in bodies of flesh but derived their essential being from the highest Power. They were opposed by the Creator and his minions but were destined to triumph over them as Cain did over Abel.
They regarded Judas the traitor as having full cognizance of the truth. He therefore, rather than the other disciples, was able to accomplish the mystery of the betrayal, and so bring about the dissolution of all things both celestial and terrestrial. The Cainites possessed a work entitled The Gospel of Judas, and Irenaeus says that he had himself collected writings of theirs, where they advocated that the work of Hystera should be dissolved. By Hystera they meant the Maker of Heaven and Earth. There is no doubt that they applauded the action of Judas in the betrayal, but our authorities differ as to the motive which prompted him. The view that Judas through his more perfect Gnosis penetrated the wish of Jesus more successfully than the others, and accomplished it by bringing him to the Cross through which he effected redemption, is only one of them. Epiphanius also says that Judas forced the Archons, or rulers, against their will to slay Christ, and thus assisted us to the salvation of the Cross. Philaster, on the other hand, assigns the action of Judas to his knowledge that Christ intended to destroy the truth—a purpose which he frustrated by the betrayal.
Transmigration
So far as the moral character and conduct of the Cainites is concerned, there is no doubt that Irenaeus intended to represent them as shrinking from no vileness, but rather as deliberately practising it. He states that they taught, as did Carpocrates, that salvation could be attained only by passing through all experience. Whenever any sin or vile action was performed by them, they asserted that an angel was present whom they invoked, claiming that they were fulfilling his operation. Perfect knowledge consisted in going without a tremor into such actions as it is not lawful even to name. Carpocrates, we are told, defended this practice by a theory of transmigration. It was necessary to pass through all experiences, and hence the soul had to pass from body to body till the whole range of experience had been traversed. If, however, this could all be crowded into a single lifetime, then the transmigration became unnecessary. We have no ground to suppose that the Cainites held such a view, but they seem to have professed the belief that this fullness of experience was essential to salvation. We have no substantial justification for doubting the truth of Irenaeus' account, though accusations of immorality urged against heretics should always be received with caution. G.R.S. Mead thinks that originally they were ascetics, while N. Lardner questions whether a sect guilty of such enormities ever existed. But there is no valid reason to deny the generally accepted view that the Gnostic attitude to matter did lead to quite opposite results. To some it would seem a duty to crush the flesh beneath the spirit by the severest austerity, but the premise might lead to a libertine as well as to an ascetic conclusion.
Other meanings
Cainites is a term used by some adherents of Christian Identity groups to insult Jews.
Cainites is an alternate transliteration for Kenites.
The book Demian, by Hermann Hesse, extensively draws upon the beliefs of the Cainite sect. The eponymous character Max Demian even convinces the protagonist Emil Sinclair that Christianity had misunderstood Cain's virtue over Abel's.
The sect is mentioned by Lucifer in The Sandman #22 when talking to Cain in Hell, noting "no greater percentage of them turned up here than of any other religion".