My favorite book by Lewis is The Screwtape Letters. In this creative and sometimes humorous work, Lewis writes a series of letters between two demons. One is an experienced demon and the other his novice nephew. The elder demon instructs the younger one on how to destroy the faith of his human "patient" that he is assigned to. It gives a great deal of insight and thoughts to ponder regarding just how demons work to kill, steal and destroy (John 10:10).
Just in time for Christmas, Focus on the Family Radio Theatre has developed the book into a dramatized audio version. Check here for ordering details. It is sure to spark great conversation in your home.
After listening to the book, try this for a family activity. Each of you write a letter as if it came from a demonic agent assigned to YOU. Just what might be used to entice you to stray from the faith or become ineffective. How would the enemy see your weaknesses?
Lewis stated that this was the most difficult book that he wrote and he wrote many Christian classics. The enemy likes to work under a cloak of invisibility. We, however should not be unaware of his schemes as Paul states in 2 Corinthians 2:11.