Mark 13:20

And except the Lord had shortened those days, no flesh would be saved: but for the elect's sake, whom he has chosen, he has shortened the days.
All Commentaries on Mark 13:20 Go To Mark 13

Theophylact of Ochrid

AD 1107
Or He means by “the abomination of desolation” the entrance of enemies into the city by violence. And well does He say, “Who are in Judaea,” for the Apostles were no longer in Judaea, but before the battle had been driven from Jerusalem. But it seems to me, that in these words He foretells the eating of children, for when afflicted by famine and pestilence, they laid hands on their children. That is, lest they who wish to fly should be impeded by the difficulties of the season. And He fitly gives the cause for so great a necessity for flight; saying, “For in those days shall be affliction, such as was not from the beginning of the creation which God created unto this time, neither shall be.”. That is, if the Roman war had not been soon finished, “no flesh should be saved;” that is, no Jew should have escaped; “but for the elect’s sake, whom He hath chosen,” that is, for the sake of the believing Jews, or who were hereafter to believe, “He hath shortened the days,” that is, the war was soon finished, for God foresaw that many Jews would believe after the destruction of the city; for which reason He would not suffer the whole race to be utterly destroyed. We must also avoid sin with fervour, and not coldly and quietly.
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Knowing this first, that no prophecy of the scripture is of any private interpretation - 2 Peter 1:20

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