Theophylact of Ohrid
Catena Aurea · Lukasevangelium 21
And take heed to yourselves, lest at any time your hearts be overcharged with surfeiting, and drunkenness, and cares of this life, and so that day come upon you unawares. For as a snare shall it come on all them that dwell on the face of the whole earth. Watch ye therefore, and pray always, that ye may be accounted worthy to escape all these things that shall come to pass, and to stand before the Son of man.
For that day will not come when men are expecting it, but unlooked for and by stealth, taking as a snare those who are unwary. For as a snare shall it come upon all them that sit upon the face of the earth. But this we may diligently keep far from us. For that day will take those that sit on the face of the earth, as the unthinking and slothful. But as many as are prompt and active in the way of good, not sitting and loitering on the ground, but rising from it, saying to themselves, Rise up, begone, for here there is no rest for thee. To such that day is not as a perilous snare, but a day of rejoicing.