The book Understanding the Tools /Weapons of the devil was written by the author after realizing how Christians are tormented by holding on things of the past. Things that hurt them long ago. Sins that are regarded as small but making impact on their lives. Unconfessed sins that the Devil claim as his legal rights. This book was written to remind the Christians about our God who is unchanging. Our Lord who is not a person that He can tell lie. If He forgave our sins, it is done; we are forgiven saints not forgiven sinners. We become new creation 2 Corinthians 5:17 "Therefore, if anyone is in Chris, he is a new creation; the old has gone, the new has come." The Devil is on duty on daily basis trying to get Christians in order to torment them. Sometimes people are deceived because they are promised luxurious things and better life. People think that when somebody is owns beautiful cars, big houses and having lot of money, it is the true good life. This book was written to help some Christians and others that the only good life is Jesus Christ. Jesus Christ is the way; the truth and the life. We are His ambassador. The Bible teaches us that "But seek first His kingdom and His righteousness, and all these things will be given to you as well" (Matthew 6:33). Christians must know that righteousness has nothing in common with wickedness. Light cannot fellowship with darkness and there is no harmony between Christ and Belial. 2 Corinthians 6:14-15. Verse 17 of this says "Therefore come out from them and be separate. Says the Lord. I will be a Father to you and you will be my sons and daughters, says the Lord Almighty." God is prepared to bless us according to His riches in glory.