And from the time that the daily sacrifice shall be taken away, and the abomination that makes desolate set up, there shall be a thousand two hundred and ninety days.
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Aquinas Study Bible
AD 2017
Further, this persecution is to be attended with the cessation of all religious worship. "They shall take away the Daily Sacrifice,"—words which the early Fathers interpret to mean, that Antichrist will suppress for three years and a half all religious worship. St. Augustine questions whether baptism even will be administered to infants during that season. (John Henry Newman)
The abomination of desolation shall be given (set up). Daniel speaks, therefore, of two abominations: the one of destruction, which Antiochus set up in its appointed time, and which bears a relation to that of desolation, and the other universal, when Antichrist shall come. For, as Daniel says, he too shall be set up for the destruction of many.
Porphyry asserts that these one thousand two hundred and ninety days were fulfilled in the desolation of the Temple in the time of Antiochus, and yet both Josephus and the Book of Maccabees, as we have said before, record that it lasted for only three years. From this circumstance it is apparent that the three and a half years are spoken of in connection with the time of the Antichrist, for he is going to persecute the saints for three and a half years, or one thousand two hundred and ninety days, and then he shall meet his fall on the famous, holy mountain. And so from the time of the removal of the endelekhismos, which we have translated as "continual sacrifice," i.e., the time when the Antichrist shall obtain possession of the world (variant: the city) and forbid the worship (A) of God, unto the day of his death the three and a half years, or one thousand two hundred and ninety days, shall be fulfilled.