'Books' in the Bible

A stream of fire was flowing and coming out from before him: a thousand thousands were his servants, and ten thousand times ten thousand were in their places before him: the judge was seated and the books were open.

In the first year of his rule, I, Daniel, saw clearly from the books the number of years given by the word of the Lord to the prophet Jeremiah, in which the making waste of Jerusalem was to be complete, that is, seventy years.