"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."

There are rust stains, grass stains, blood stains, and chocolate stains. In the laundry room, those stains are the worst. They don't just leave a mark on the surface of the fabric; they also leave a residue that gets into the fibers of our clothes. That's how evil works. We must not kid ourselves. Evil is bad and leaves a mark on everything it touches, even the hearts of people who are otherwise good. Because of this, we are told to stay far away from evil and to avoid even seeing it. That's also why Jesus died: not only to defeat the Evil One but also to get rid of the stain and mess he left behind.