1 Peter 1:13-16
Why gird up the loins of your mind, be sober…
True holiness hath a repugnancy and contrariety to all sin. It is not contrary to sin because it is open and manifest, because it is private and secret, but to sin as sin, whether public or private, because both one and the other are contrary to God's will and glory, as it is with true light, though it be but a beam, yet it is universally opposed to all darkness; or as it is with heat, though there be but one degree of it, yet it is opposite to all cold; so if the holiness be true and real, it cannot comply with any known sin. You can never reconcile them in the affections; they may have an unwilling consistence in the person, but you can never make them agree in the affection.
Parallel VersesKJV: Wherefore gird up the loins of your mind, be sober, and hope to the end for the grace that is to be brought unto you at the revelation of Jesus Christ;