Titus 1:15 in the World English Bible
To the pure, all things are pure, but to those who are defiled and unbelieving, nothing is pure; but both their mind and their conscience are defiled.
Context
14 Not giving heed to Jewish fables, and commandments of men, that turn from the truth.
15 Unto the pure all things are pure: but unto them that are defiled and unbelieving is nothing pure; but even their mind and conscience is defiled.
16 They profess that they know God; but in works they deny him, being abominable, and disobedient, and unto every good work reprobate.