Alcuin of York — on Rev 5:1 (QUESTIONS AND ANSWERS MANUAL ON REVELATION)

“QUESTION: What is meant by And I saw in the right hand of him that sat on the throne, a book written within and without? ANSWER: This vision represents the mysteries of the holy Scripture disclosed to us by the incarnation of the Lord. It is as if the Scripture's concordant unity contained the Old Testament outside and the New inside. THERE FOLLOWS: Sealed with seven seals. ANSWER: It means either covered with all the fullness of its hidden mysteries or written by the disposition of the sevenfold Spirit. Indeed the entire series of the Old and of the New Testament warns us that we should do penance for our sins, seek the kingdom of heaven, and flee the tears of hell.”