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.
15
To the pure, all things are pure, but to those who are corrupted and do not believe, nothing is pure. In fact, both their minds and consciences are corrupted.
16 They profess that they know God; but in works they deny him, being abominable, and disobedient, and unto every good work reprobate.
16
They claim to know God, but by their actions they deny him. They are detestable, disobedient and unfit for doing anything good.