2 Bible Verses about Books, Metaphorical Use

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

And I went to the angel, telling him to give me the little book. And he saith to me, Take it, and eat it up; and it will make thy stomach bitter, but in thy mouth it will be sweet as honey. And I took the little book out of the angels hand, and ate it up; and it was in my mouth sweet as honey; and when I had eaten it, my stomach became bitter.