"I feel a great urgency about this message because the vision tells us that not only are the “books” opened, but also the other book, THE BOOK OF LIFE. And whosoever was not found written in the book of life was cast into the lake of fire — for further purging and purification. I want to help you grasp why you are here — you are being prepared to reveal the invisible God to the visible creation! Dear reader of these lines, you are not just anybody. You came out from God. There is a strange and wonderful statement in Hebrews 10:7. “Lo, I come (in the VOLUME OF THE BOOK it is written of me) to do Thy will, O God.” These words are attributed to Jesus Christ, the Son of the living God. This is, however, a quotation from Psalm 40:7. Therefore, the “volume of the book” referred to was written before the Psalms! The five books of Moses were written before any others, except, perhaps, the book of Job; and in these earliest books of the Bible Moses pled for God to have mercy upon the children of Israel, “and if not, blot me out of THY BOOK which Thou hast written” (Ex. 32:32). These words speak of a book written by God Himself which was older than Genesis or any of the other books of Moses. God wrote the law of His life in His Christ (Head and body) long before the Bible was written! The scripture indicates that the revelation Jesus was sent to bring to pass on earth was fully recorded in the “Volume of the Book” long before Jesus ever started to walk out His script in the earth realm. The nature of God written in the Christ, the Logos, the Word, which was in the beginning with God, was the heavenly reality of that Book of Life that would be written and opened on earth. Do you not get the connection between the Word and the Volume of the Book? That’s what a book is — it is a word! And it is the Book of Life, for of the Word John says, “In Him was Life; and the life was the light of men” (Jn. 1:1,4). And then John tells us that “THE WORD was made flesh and dwelt among us, and we beheld His glory…” (Jn. 1:14). By revelation of the Spirit John is telling us that the Word was made manifest FOR ALL THE WORLD TO READ. This Word, this Holy Record of the Life of God, was not written upon stone, nor papyrus, nor golden parchment, but THE WORD was MADE FLESH TO DWELL AMONG MEN AND BE READ BY THEM! Unlike any other book in the world, this “Book” was alive and the title of this Book was JESUS!"

Much more in the link:

https://www.godfire.net/eby/Rev/rev230.html