2 Bible Verses about Books, Metaphorical Use

Then I saw a great white throne with a being seated on it from whose presence earth and sky fled so far that they could not be found. I saw the dead, high and low, standing before the throne, and books were opened. Then another book was opened; it was the book of life. And the dead were judged by what was written in the books about what they had done.

So I went up to the angel and told him to give me the little scroll. And he said to me, "Take it and eat it; it will be bitter in your stomach, but in your mouth it will taste as sweet as honey." So I took the little scroll from the angel's hand and ate it, and it did taste as sweet as honey, but when I had eaten it, it made my stomach bitter.