'Book' in the Bible

I'll inform you about what has been recorded in the Book of Truth. No one stands firmly with me against these opponents, except Michael your prince.

""At that time, Michael will arise, the great prince who will stand up on behalf of your people, and a time of trouble will come like there has never been since nations began until that time. Also at that time, your people will be delivered everyone who will have been written in the book.