Verse 30. This generation shall not pass away, until all these things be accomplished. This is one of those prophecies which admit of a growing fulfillment. If the word "generation" (γανεὰ) be understood (as it may undoubtedly be understood) to mean the sum total of those living at any time on the earth, the prediction would hold true as far as the destruction of Jerusalem was concerned. The destruction of Jerusalem took place within the limits of the generation living in our Lord's time; and there might be some of those whom he was then addressing who would live to see the event. His prediction amounted, in fact, to this, that the destruction of Jerusalem would take place within forty years of the time when he was speaking. But it may have a wider meaning. It may mean the Jewish people. Their city would be destroyed their power overthrown. They would be "peeled and scattered." But they would still remain a distinct and separate nation to the end of the world. And there are other prophecies which show that with their national conversion to Christianity will be associated all that is most glorious in the future Church of God.

13:28-37 We have the application of this prophetic sermon. As to the destruction of Jerusalem, expect it to come very shortly. As to the end of the world, do not inquire when it will come, for of that day and that hour knoweth no man. Christ, as God, could not be ignorant of anything; but the Divine wisdom which dwelt in our Saviour, communicated itself to his human soul according to the Divine pleasure. As to both, our duty is to watch and pray. Our Lord Jesus, when he ascended on high, left something for all his servants to do. We ought to be always upon our watch, in expectation of his return. This applies to Christ's coming to us at our death, as well as to the general judgment. We know not whether our Master will come in the days of youth, or middle age, or old age; but, as soon as we are born, we begin to die, and therefore we must expect death. Our great care must be, that, whenever our Lord comes, he may not find us secure, indulging in ease and sloth, mindless of our work and duty. He says to all, Watch, that you may be found in peace, without spot, and blameless.Verily I say unto you, that this generation shall not pass,.... Not the generation of men, in general, or Jews in particular, nor of Christians; but that present generation of men, they should not all go off the stage of life,

till all these things be done; which were now predicted by Christ, concerning the destruction of Jerusalem, the signs of it, and what, should immediately follow upon it; See Gill on Matthew 24:34.