This is a great book mostly geared toward Christians, but non-Christians will also be interest if they are interest in finding out more about Satan. McCallum did a great job describing who Satan is and why didn't God destroy him. He also instructs us why we need to live in a war-time mentality fighting against the dark forces of this world. I'm very impress by how he analyzed Satan's attacks on us from the scene Adam and Eve encountered with the serpent in the beginning, and the scene of Jesus facing Satan's 3 temptations. He really showed how Satan uses the same 3 attacks on us and how susceptible we are without memorizing and having a good knowledge of God's words. I especially found the chart about our sinful attitude useful. He covered deserving, threats, super spirituality, self righteousness, overconfidence, excuses, and rationalizations.
Favorite Quotes: (From the chart) "We always have ample excuses for our failures, and none of them matter. Instead, we should admit our fault frankly and without qualifications. Only agreeing with God breaks the power of sin. Making excuses only means we will fall again - and soon."
"In our ingenuity, we can justify virtually anything. Grace, not rationalization, is the answer to guilt feelings. This is what we are doing when we rationalize sin. God says it's evil, but we argue that it's not so bad."