Every Christian faces a powerful and cunning enemy-Satan. Victory over this opponent depends upon knowing his strategies and schemes and drawing upon the empowering presence of the Holy Spirit to stand firm against him. As Dr. Pentecost observes, "No individual can be victorious against the adversary of our souls unless he understands that adversary; unless he understands his philosophy, his methods of oepration, his methods of temptation. We hear very little today about Satan, and consequently many who recognize Satan's existence and acknowledge that he is the enemy of their souls are ill prepared to meet him....we do not know what Scripture teaches about this person, his methods, his plans, his program, his devices. Consequently, we fall in defeat.