'Books' in the Bible

A river of fire was streaming forth and proceeding from his presence. Many thousands were ministering to him; Many tens of thousands stood ready to serve him. The court convened and the books were opened.

in the first year of his reign I, Daniel, came to understand from the sacred books that, according to the word of the LORD disclosed to the prophet Jeremiah, the years for the fulfilling of the desolation of Jerusalem were seventy in number.