From the time that Jesus ascended back into heaven until He comes again, His office work has been and will continue to be centered in the heavenly sanctuary, and all the mysteries of that work are revealed in the book of Revelation. Both the important events that have and will happen in heaven, as well as the corresponding events upon earth, are recorded there. It is a book that is chronicled for God’s people through the ages since Jesus’ ministry on earth ended and His ministry in heaven began. However, there are some vital things to understand about the book of Revelation.