This lesson discusses the origin and development of the war between good and evil. It explains that Satan was originally Lucifer, a beautiful, perfect angel, but he became prideful and wanted to be treated like God. There was then a war in heaven where God and the faithful angels defeated Satan and his angels, casting them out of heaven. The war continued on earth, with Satan trying to kill Jesus as a baby and later using Rome to persecute the early Church. Satan is still trying to destroy God's faithful remnant, but Jesus already defeated him at the cross. We can overcome as others like Abel, Noah and Moses did by keeping our faith in Jesus.