Watch therefore. In Luke the exhortation is more pointed, or, at least, more special, Take heed to yourselves, lest at any time your hearts be overcharged with surfeiting, and drunkenness, and the cares of this life. And certainly he who, by living in intemperance, has his senses overloaded with food and wine, will never elevate his mind to meditation on the heavenly life. But as there is no desire of the flesh that does not intoxicate a man, they ought to take care, in all these respects, not to satiate themselves with the world, if they wish to advance with speed to the kingdom of Christ. The single word watch -- which we find in Matthew -- denotes that uninterrupted attention which keeps our minds in full activity, and makes us pass through the world like pilgrims. In the account given by Mark, the disciples are first enjoined to take heed lest, through carelessness or indolence, ruin overtake them; and next are commanded to watch, because various allurements of the flesh are continually creeping upon us, and lulling our minds to sleep. Next follows an exhortation to prayer, because it is necessary to seek elsewhere the supplies that are necessary for supporting our weakness. Luke dictates the very form of prayer; first, that God may be pleased to rescue us from so deep and intricate a labyrinth; and next, that he may present us safe and sound in presence of his Son; for we shall never be able to reach it but by miraculously escaping innumerable deaths. And as it was not enough to pass through the course of the present life by rising superior to all dangers, Christ places this as the most important, that we may be permitted to stand before his tribunal. For you know not at what hour your Lord will come. It ought to be observed, that the uncertainty as to the time of Christ's coming -- which almost all treat as an encouragement to sloth -- ought to be felt by us to be an excitement to attention and watchfulness. God intended that it should be hidden from us, for the express purpose that we may keep diligent watch without the relaxation of a single hour. For what would be the trial of faith and patience, if believers, after spending their whole life in ease, and indolence, and pleasure, were to prepare themselves within the space of three days for meeting Christ?

Watch - Be looking for his coming. Be expecting it as near; as a great event; as coming in an unexpected manner. Watch the signs of his coming, and be ready.

Watch therefore - Be always on your guard, that you may not be taken unawares, and that you may be properly prepared to meet God in the way either of judgment or mercy, whensoever he may come. This advice the followers of Christ took, and therefore they escaped; the miserable Jews rejected it, and were destroyed. Let us learn wisdom by the things which they suffered.

(11) Watch therefore: for ye know not what hour your Lord doth come.
(11) An example of the horrible carelessness of men in those things in which they ought to be most careful.

Watch therefore,.... Since the time of this desolation is so uncertain, and since it will come upon the Jews unawares, and some wilt escape, whilst others perish; for the words are plainly an inference from what precedes, and clearly relate to things going before, and are not a transition to a new subject:
for ye know not what hour your Lord doth come; to avenge himself of the unbelieving Jews, and fulfil what he in person, and by his apostles, had predicted and warned them of: though I will not deny, but that what follows may be much better accommodated and applied to the second coming of Christ, and the last judgment, and the behaviour of men with regard to both, than anything said before; and it may be our Lord's intention, to lead his disciples gradually, and as it were imperceptibly, to the last scene of things on earth, to make way for the parables and description of the future judgment, in the next chapter; still keeping in view, and having reference to, the subject he had been so long upon.

To watch for Christ's coming, is to maintain that temper of mind which we would be willing that our Lord should find us in. We know we have but a little time to live, we cannot know that we have a long time to live; much less do we know the time fixed for the judgment. Our Lord's coming will be happy to those that shall be found ready, but very dreadful to those that are not. If a man, professing to be the servant of Christ, be an unbeliever, covetous, ambitious, or a lover of pleasure, he will be cut off. Those who choose the world for their portion in this life, will have hell for their portion in the other life. May our Lord, when he cometh, pronounce us blessed, and present us to the Father, washed in his blood, purified by his Spirit, and fit to be partakers of the inheritance of the saints in light.

Watch therefore. Because the coming will be unexpected. Mark adds, "pray."

Ye know not what hour your Lord cometh - Either to require your soul of you, or to avenge himself of this nation. Mark 13:33; Luke 12:35; Luke 21:34.