Bede the Venerable
Catena Aurea · Markusevangelium 13
But when ye shall see the abomination of desolation, spoken of by Daniel the prophet, standing where it ought not, (let him that readeth understand,) then let them that be in Judæa flee to the mountains: 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: And let him that is in the field not turn back again for to take up his garment. But woe to them that are with child, and to them that give suck in those days! And pray ye that your flight be not in the winter. 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. And except that the Lord had shortened those days, no flesh should be saved: but for the elect’s sake, whom he hath chosen, he hath shortened the days.
(ubi sup.) Then let him who is on the house-top, that is, whose mind rises above carnal deeds, and who lives spiritually, as it were in the free air, not come down to the base acts of his former conversation, nor seek again those things which he had left, the desires of the world or the flesh. For our house either means this world, or that in which we live, our own flesh.