2 Bible Verses about Books, Metaphorical Use

And I saw a great white throne, and him that sat upon it, from whose face the earth and the heaven fled away; and no place was found for them. And I saw the dead, small and great, stand before the throne; and the books were opened; and another book was opened, which is the book of life: and the dead were judged out of the things that were written in the books, according to their works.

And I went to the angel, and said to him: Give me the little book. And he said to me: Take it, and eat it up, and it will make your stomach bitter, but it will be in your mouth as sweet as honey. And I took the little book out of the angel's hand, and ate it up, and it was in my mouth as sweet as honey; and when I had eaten it, my stomach was bitter.