Just as Jesus spoke with authority towards demons, casting them out and commanding them, that authority is given to believers by the Spirit. This authority is unique to believers and the demons know it, people can try to imitate it, but will not have any luck, the best they can do is try and trick people, just like Satan. The glory of God is shown when imitators are exposed and the truth is shown.

• We have a responsibility to invoke the name of Jesus when evil attempts to appropriate Christianity. 
• There is no cross-pollination in Christianity.
• Melding the Godly with that which is ungodly is cross-contamination. Nothing good blooms from evil.
• We have authority over sin.