Jamieson, Fausset and Brown on Daniel 8:23

23. transgressors are come to the full--This does not hold good of the times of Antiochus, but of the closing times of the Christian era. Compare Lu 18:8, and 2Ti 3:1-9, as to the wickedness of the world in general just before Christ's second coming. Israel's guilt, too, shall then be at the full, when they who rejected Christ shall receive Antichrist; fulfilling Jesus words, "I am come in My Father's name, and ye receive Me not; if another shall come in his own name, him ye will receive" (compare Ge 15:16; Mt 23:32; 1Th 2:16).

of fierce countenance--(De 28:50); one who will spare neither old nor young.

understanding dark sentences--rather, "artifices" [Gesenius]. Antiochus made himself master of Egypt and Jerusalem successively by craft (1 Maccabees 1:30, &c.; 2 Maccabees 5:24, &c.).