One saint — i.e., an angel, who, however, has not been mentioned before. This part of the vision recalls Daniel 7:16. It is implied that the angels were conversing upon the subject of this awful revelation concerning the future of God’s people. Only a portion of what they said is here recorded.
The vision. — The inquiry means, “How long shall be the duration of the object of this vision, so far as it has to do with the great apostasy?”
Transgression of desolation. — Comp. Daniel 9:27. Probably these words mean the same as the “abomination that maketh desolate” (Daniel 11:31; Daniel 12:11; see 1Ma. 1:59).