Some Gnostics sprinkled the heads of the dying with oil and water to render them invisible to the powers of darkness; but in the East generally, where the need to compete with the Cathar sacrament of Consolatio was less acutely felt, extreme unction is unknown.
- The system of Origen was formulated in opposition to the Greek philosophers on the one hand, and the Christian Gnostics on the other.
Berthelot, " alchemy rested partly on the industrial processes of the ancient Egyptians, partly on the speculative theories of the Greek philosophers, and partly on the mystical reveries of the Gnostics and Alexandrians."
The earlier fathers, Irenaeus, Hippolytus, Tertullian, believed in chiliasm simply because it was a part of the tradition of the church and because Marcion and the Gnostics would have nothing to do with it.
The life and writings of Bardaisan, " the last of the gnostics," and in some sense the father of Syriac literature and especially of Syriac poetry, have been treated in a separate article.