Then I heard one saint speaking, and another saint said unto that certain saint who spoke, How long shall be the vision concerning the daily sacrifice, and the transgression of desolation, to give both the sanctuary and the host to be trodden under foot?
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Aquinas Study Bible
AD 2017
One angel asks another angel for how long a period the Temple is by the judgment of God to be desolated under the rule of Antiochus, King of Syria, and how long the image of Jupiter is to stand in God's Temple. (St. Jerome)
Another. We do not inquire how the angels explained themselves, or whether they instruct each other. This conversation was for the prophet's information. (Calmet)
One angel asked the other a question about futurity. (Worthington)
One angel asks another angel for how long a period the Temple is by the judgment of God to be desolated under the rule of Antiochus, King of Syria, and how long the image of Jupiter is to stand in God's Temple (according to his additional statement: "... and the sanctuary and the strength be trodden under foot?").
Instead of "another one which one I do not know" ---- the rendering of Symmachus (p. 537) (A) (tini pote) which I too have followed ---- Aquila and (675) Theodotion, and the Septuagint as well, have simply put the Hebrew word (p-l-m-n-y) phelmoni (B) itself. Without specifying the angel's name, I should say that the author indicated some one of the angels or other in a general way.