<p>20:15 <i>And if anyone was not found written in the book of life, he was cast into the lake of fire</i>- The idea of being found written in a book is common in the narratives of the restoration, which looked forward to the final restoration of the Kingdom. Only those &quot;found written&quot; in the genealogies could be Levites in the re-established Kingdom (Neh. 7:5); those corrupted by their time in Babylon were excluded. And specifically it is those Jews who spiritually survive the final tribulation, the time of trouble in Israel such as never was, who are found written in the book and delivered (Dan. 12:1). It is those written in that book who will not have worshipped the beast during the final three and a half year tribulation (13:8; 17:8). Some will tragically have had their names removed from that book (3:5). Again, the purview of the teaching in this chapter is specifically about the believers and unbelievers in the earth / land promised to Abraham during the tribulation period.</p>