Jamieson, Fausset and Brown on Daniel 7:10

10. thousand ... ministered unto him--so at the giving of the law (De 33:2; Psa 68:17; He 12:22; Jude 14).

ten ... thousand before him--image from the Sanhedrim, in which the father of the consistory sat with his assessors on each side, in the form of a semicircle, and the people standing before him.

judgment was set--The judges sat (Re 20:4).

books ... opened--(Re 20:12). Forensic image; all the documents of the cause at issue, connected with the condemnation of Antichrist and his kingdom, and the setting up of Messiah's kingdom. Judgment must pass on the world as being under the curse, before the glory comes; but Antichrist offers glory without the cross, a renewed world without the world being judged.