'Book' in the Bible

And the LORD said unto Moses, Write this for a memorial in a book, and rehearse it in the ears of Joshua: for I will utterly put out the remembrance of Amalek from under heaven.

And he took the book of the covenant, and read in the audience of the people: and they said, All that the LORD hath said will we do, and be obedient.

Yet now, if thou wilt forgive their sin ; and if not, blot me, I pray thee, out of thy book which thou hast written.

And the LORD said unto Moses, Whosoever hath sinned against me, him will I blot out of my book.