According to C.S. Lewis, evil is often a perversion of something good that [[God]] has created. In the instance of [[Genesis]] 3 (Satan's temeptation of Eve), Satan added potency to his temptation by mixing good with evil: Eve saw that the tree was good for food.<ref name="Virkler">{{cite book |last1= Virkler|first1= Henry A.|title= A Christian's Guide to Critical Thinking |url=http://books.google.no/books?id=rUgqAAAACAAJ |accessdate=16 February 2012 |origyear=1993 |publisher= Wipf and Stock Publishers|location= Eugene, OR|isbn= 1-59752-661-4 |pages=73 }}</ref>
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According to C.S. Lewis, evil is often a perversion of something good that [[God]] has created. In the instance of [[Genesis]] 3 (Satan's temeptation of Eve), Satan added potency to his temptation by mixing good with evil: Eve saw that the tree was good for food.<ref name="Virkler">{{cite book |last1= Virkler|first1= Henry A.|title= A Christian's Guide to Critical Thinking |url=http://books.google.no/books?id=rUgqAAAACAAJ |accessdate=16 February 2012 |year=1993 |publisher= Wipf and Stock Publishers|location= Eugene, OR|isbn= 1-59752-661-4 |pages=73 }}</ref>