The real division of the Bible is this: first, everything you get from Genesis 1 :1 to Genesis 3:14; then everything from Genesis 3:15 to the very end of the Bible.  What you have up until Genesis 3:14 is the account of the creation, and of God’s covenant of works with man, and how that failed because man broke it.  Beginning with Genesis 3:15 you get the announcement of the gospel, the covenant of grace, the way of salvation, and that is the whole theme of the Bible until you come to the last verse of the book of Revelation.  That is the real division of the Bible.  – D. Martyn Lloyd-Jones, Great Doctrines of the Bible, Volume 1, p. 228