Chan does a tremendous job debunking Bell's claims and writes the book from a plethora of scriptures to prove hell is indeed real and that there are no second chances after death. Oh yeah . . . and that Jesus Christ is the absolute only way to Heaven.
The thing that is greatest to me about this book was that Chan didn't write it from a perspective of legalism, anger, pride, or judgment. Chan writes the book from a perspective of openly admitting a desire for Bell to be right. After all, life would be much simpler. Yet Chan writes constantly that the more he researches hell and the more scriptures he uses to prove its existence and its totality, the more convicted he is about not doing enough to keep people from going there. At one point in the book, Chan mentions sitting in a coffee shop writing and looking to realize that a large portion of the other people in the same shop with him are headed for the place he is working hard to prove exists. He uses his research and discourse on hell to encourage believers first to live right and holy lives as the Bible commands (not suggests), and second to witness and evangelize which happens to also be commanded as well.
Ultimately Chan falls on the side of not understanding every decision God makes but understanding that God's ways are not our ways and therefore we must trust Him to be perfect as we know He is. This is a great book for insight on the topic and existence of hell or if you just want to realize why we should be witnessing more today than ever before.