Knowing that he that is such is subverted, and sinneth, being condemned of himself.
Titus 3:11
King James Version (public domain)
Traditionally attributed to Paul · 1st century AD · Thirteen epistles of the New Testament are traditionally attributed to him
Context
9But avoid foolish questions, and genealogies, and contentions, and strivings about the law; for they are unprofitable and vain.
10A man that is an heretick after the first and second admonition reject;
11Knowing that he that is such is subverted, and sinneth, being condemned of himself.
12When I shall send Artemas unto thee, or Tychicus, be diligent to come unto me to Nicopolis: for I have determined there to winter.
13Bring Zenas the lawyer and Apollos on their journey diligently, that nothing be wanting unto them.