Titus 3:8 - 11

3:8 This is a faithful saying, and these things I will that thou affirm constantly, that they which have believed in God might be careful to maintain good works. These things are good and profitable unto men.
3:9 ¶ But avoid foolish questions, and genealogies, and contentions, and strivings about the law; for they are unprofitable and vain.
3:10 A man that is an heretick after the first and second admonition reject;
3:11 Knowing that he that is such is subverted, and sinneth, being condemned of himself.