By these days He signifies the time of the siege and captivity which was coming upon them from the Romans, of which He had said before, Woe to them that are with child, and give suck in those days. It is natural, when captivity by an enemy is threatening, to seek for refuge in fastnesses or hidden places, where men may lie concealed. And so it follows, Then shall they begin to say to the mountains, Fall on us; and to the hills, Cover us. For Josephus relates, that when the Romans pressed hard upon them, the Jews sought hastily the caverns of the mountains, and the lurking places in the hills. It may be also that the words, Blessed are the barren, are to be understood of those of both sexes, who have made themselves eunuchs for the kingdom of heaven’s sake, and that it is said to the mountains and hills, Fall upon us, and Cover us, because all who are mindful of their own weakness, when the crisis of their temptations breaks upon them, have sought to be protected by the example, precepts, and prayers, of certain high and saintly men.
It follows, But if they do these things in a green tree, what shall be done in the dry?
Reproduced in full. Translation: Oxford 1841 (Newman), public domain (Public domain).