The Eastern symbol of Yin Yang, with its equal swirls of black and white, has become ubiquitous on clothing brands, computer games and in popular culture generally. This idea of a balance between good and evil, of an eternal struggle between the two, is played out in comics and TV shows, and is very appealing. We can identify that tug of war in the world around us and we feel the struggle within ourselves.
The concept of equal but opposing forces in an epic duel has even crept into Christian thinking. However, Biblical Christianity teaches a far different and more encouraging power balance than that good causes and is dependent upon evil, just holding its own in the struggle.