He's scared of being found out.

      Satan’s power to tempt Christians lies in his fierce ability to deceive. Ignatius of Loyola says we are often like an “open door.” Meaning that we do not feel that the urgings of Satan are evil because, often, our own spirit is deceived to think that these urgings are holy. Because Satan is so equipped to deceive, his great fear is being revealed. The Bible teaches us in James 5:16 to confess our sins to one another to be healed. I believe this is because when we reveal our sin, and therefore the temptation and deception of Satan, he no longer has a hold on us. This is one practice that I know I need to put into action more in my life. I often get so caught up in this ruse that there is nothing wrong inside of me that I continue to let Satan hold my sins over me. He continues to deceive me when I will not admit that I am indeed being deceived. Accountability is key; and I need this more on a regular basis.