This book represents the reality of the hell, which is really existing. The Pastor Sarah Seoh visited hell many times and tells us very surprising things. First of all, she saw not only non-Christians but also Christians in hell. Second of all, she saw many Christians outside the Jerusalem City in heaven where it is different from hell. She explains why Christians are in hell with the verses in the Bible. The Bible tells us that Christians go to hell if they sin repeatedly without repentance to death even though they believed in Jesus. Jesus said if your hand and foot makes you sin, cut off your hand; otherwise, you will be thrown into hell (Mark 9:43-49). She finds everything in the Bible that Jesus told us exactly happens in hell and warns us to live holy life according to the words of God in the Bible. She says that the reason why she wrote the book of hell is for even one soul not to go to hell with the heart of God.