Titus 1:13-16

13This testimony is true. Therefore rebuke them sharply, that they may be sound in the faith; 14Not giving heed to Jewish fables, and commandments of men, that turn from the truth. 15To the pure all things are pure: but to them that are defiled and unbelieving is nothing pure; but even their mind and conscience is defiled. 16They profess that they know God; but in works they deny him, being abominable, and disobedient, and to every good work disqualified.1