Angels have a much more important place in the Bible than the devil and his demons. Therefore, I undertook a biblical study of the subject of angels. Not only has it been one of the most fascinating studies of my life, but I believe the subject is more relevant today then perhaps at any time in history. The Bible teaches that angels intervene in the affairs of nations. God often uses them to execute judgment on nations. They guide, comfort and provide for the people of God in the midst of suffering and persecution. Martin Luther once said in Tabletalk, "An angel is a spiritual creature without a body created by God for the service of Christendom and the church." In the midst of the world crisis through which we are destined to live in the years ahead, the subject of angels will be of great comfort and inspiration to believers in God and a challenge to unbelievers to believe. - Preface.