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
George Leo Haydock
AD 1849
This may be explained in a more general sense of the persecution of Antichrist, which will be dreadful beyond description, and executed in every part of the world. The time however allowed to him and his wicked agents to tread under foot the holy city, (Apocalypse xi. 2.) i.e. the Church of Christ, will not extend beyond forty-two months, or three years and a half. This space of time Christ has set apart to purify his Church, and try his servants; and therefore he allows them to fall under the power of this merciless tyrant; and it was given unto him, says St. John, speaking of this event, to make war with the saints, and overcome them. (Apocalypse xiii. 7.) We are admonished of the same by the prophet Daniel: (vii. 21.) I beheld, says he, and lo that horn (Antichrist) made war against the saints, and prevailed against them; and he shall speak words against the Most High, and shall crush the saints of the Most High . and they shall be delivered into his hand until a time, and times, and half a time, (Daniel vii. 25.) i.e. a year, two years, and half a year, or three years and a half, the same with St. John. (Pastorini, p. 327 and 8.)
St. Augustine, speaking of this dreadful period, says: this persecution will be the last; it will happen towards the approach of the last judgment, and will fall upon the Church in every part of the world; that is, the whole city of Christ will be persecuted by the whole city of the devil, as far as both are extended upon earth. (De civit. lib. xx. chap. xi.) But our Saviour will put a stop to these calamities on account of his elect, unwilling that they should be tempted above their strength; for he will descend himself from heaven, and, as St. Paul tells us, will kill the wicked man, Antichrist, with the breath of his mouth, and shall destroy him with the brightness of his coming.