13:8 book of life. The Greek may also be rendered “written in the slain Lamb’s Book of Life from the foundation of the world” (cf. 17:8). The book is the heavenly roster of those destined to new life through the purchase of Christ’s blood (3:5; 5:9). In the midst of persecution and the immense power of the beast, the saints may find security in God’s guarantee of their heavenly citizenship (17:8; 20:12, 15; 21:27). A similar guarantee is found in ch. 7.