Few theologians present detailed information on the book of Revelation with such accuracy. As the last days of this age race to its finality, knowing what to expect and to how to prepare is vital. God is calling the sincere Christian to join his last days army. However, how can we serve our Lord if we don't keep what is written in Scripture, especially the book of Revelation? "Blessed is he who reads aloud the words of the prophecy, and blessed are those who hear, and who keep what is written therein; for the time is near" (Revelation 1:3).