Bible Encyclopedias
Book of Judgment.

Cyclopedia of Biblical, Theological and Ecclesiastical Literature

The allusion here (Daniel 7:10) is probably either to the practice of opening books of account to settle with servants or laborers, or to a custom of the Persians, among whom it was a constant practice every day to write down the special services rendered to the king, and the rewards given to those who had performed them. Of this we see an instance in the history of Ahasuerus and Mordecai (Esther 6:1-3). It also appears to be an allusion to the methods of human courts of justice (Revelation 20:12), referring to the proceeding which will take place at the day of God's final judgment.

Bibliography Information
McClintock, John. Strong, James. Entry for 'Book of Judgment.'. Cyclopedia of Biblical, Theological and Ecclesiastical Literature. https://www.studylight.org/​encyclopedias/​eng/​tce/​b/book-of-judgment.html. Harper & Brothers. New York. 1870.