F. von Stein (Gotha): Die Skopzensekte in Russland in ihrer Entstehung, Organisation und Lehre. Nach den zuverlässigsten Quellen dargestellt. In: Zeitschrift für Ethnologie – Organ der Berliner Gesellschaft für Anthropologie, Ethnologie und Urgeschichte, vol. 7 (1875),66–67.
Matthew 19:12: "For there are some eunuchs, which were so born from their mother's womb: and there are some eunuchs, which were made eunuchs of men: and there be eunuchs, which have made themselves eunuchs for the kingdom of heaven's sake. He that is able to receive it, let him receive it."
"Matthew 18:8–9: "Wherefore if thy hand or thy foot offend thee, cut them off, and cast them from thee: it is better for thee to enter into life halt or maimed, rather than having two hands or two feet to be cast into everlasting fire. And if thine eye offend thee, pluck it out, and cast it from thee: it is better for thee to enter into life with one eye, rather than having two eyes to be cast into hell fire."
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Селиванов, Кондратий in: Энциклопедический словарь Брокгауза и Ефрона (1890—1907).
