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.
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Glossa Ordinaria
AD 1480
After speaking of the things which were to happen before the destruction of the city, the Lord now foretells those which happened about the destruction itself of the city, saying, “But when ye shall see the abomination of desolation standing where it ought not,(let him that readeth understand).”.
Or rather went out of their own accord, being led by the Holy Spirit. It goes on: “And let him that is on the housetop not go down into the house, neither enter therein, to take any thing out of his house;” for it is a desirable thing to be saved even naked from sucha destruction. It goes on: “But woe to them that are with child, and to them that give suck in those days.”.
Again, after having mentioned this double impediment to flight, which might arise either from the desire of taking away property, or from having children to carry, He touches upon the third obstacle, namely, that coming from the season; saying, “And pray ye that your flight be not in the winter.”