Unto the pure all things are pure: but unto them that are defiled and unbelieving is nothing pure; but even their mind and conscience are defiled.
All Commentaries on Titus 1:15 Go To Titus 1
Gregory The Dialogist
AD 604
For, as in the Old Testament outward acts were attended to, so in the New Testament it is not so much what is done outwardly as what is thought inwardly that is regarded with close attention, that it may be punished with searching judgment.
