Titus 1:15

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.

All things - external, "are pure" in themselves; the distinction of pure and impure is not in the things, but in the disposition of him who uses them: whereas the "commandments of men" () forbad certain things as if impure intrinsically. "To the pure" - i:e., those purified in heart by faith (; ); all outward things are pure; open to their use. The impurity of the impure is communicated to all outward things that they use. Sin alone touches and defiles the soul (; ).

Nothing pure - either within or without (; ). Mind - their mental sense.

Conscience - their moral consciousness of the conformity or discrepancy between their motives and acts on the one hand, and God's law on the other. A conscience and a mind defiled are the source of the errors opposed in the pastoral letters (; ; ).