See Bible.
And in addition to what is there said, I would beg to remark, that the Hebrews had several names for distinguishing their several books; such as "the book of the covenant," (Exodus 24:7; 2 Kings 23:21) "the book of the law." Deuteronomy 30:10 and Deuteronomy 31:26. Their general term for a book was Sepher. In the New Testament, we read of "the book of life." (Philippians 4:3; Revelation 20:12) It is our happiness to have all that it behoves us to know, concerning the book of life, in the copy of it of the Bible, which becomes indeed, in the proclamation of grace it contains, "the book of life." Here we find the characters of those whose names are written in heaven fully drawn out, and they altogether correspond to those for whom JEHOVAH gave Christ as a covenant. See Isaiah 42:6-7; Luke 4:18. See also Daniel 7:10 and Daniel 12:1; Revelation 5:1-3; Psalms 2:7