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KJV - Knowing that he that is such is subverted, and sinneth, being condemned of himself.
ASV - knowing that such a one is perverted, and sinneth, being self-condemned.
BBE - Clearly he is in error and a sinner, being self-judged.
WEB - knowing that such a one is perverted, and sins, being self-condemned.
YLT - having known that he hath been subverted who `is' such, and doth sin, being self-condemned.