Matthew 24:1-2.
And Jesus went out from the temple, and departed. And His disciples came to Him to show Him the buildings of the temple. And He answered and said to them, See ye not all these things? Verily I say unto you, there shall not be left here one stone upon another, that shall not be thrown down.
For inasmuch as He said, Your house is left desolate, and had previously forewarned them of many grievous things; therefore the disciples having heard these things, as though marvelling at it, came unto Him, showing the beauty of the temple, and wondering, if so much beauty was to be destroyed, and materials so costly, and variety of workmanship past utterance; He no longer thenceforth talks to them of desolation merely, but foretells an entire destruction. See ye not all these things, says He, and do ye marvel, and are you amazed? There shall not remain one stone upon another. How then did it remain? One may say. But what is this? For neither so has the prediction fallen to the ground. For He said these things either indicating its entire desolation, or at that spot where He was. For there are parts of it destroyed unto the foundations.
And together with its we would say another thing also, that from what has been done, even the most contentious ought to believe concerning the remains, that they are utterly to be destroyed.
And as He sat upon the mount of Olives, the disciples came unto Him privately, saying, Tell us when shall these things be? And what shall be the sign of Your coming, and of the end of the world?
Therefore did they come unto Him privately, as it was of such matters they meant to inquire. For they were in travail to know the day of His coming, because of their eager desire to behold that glory, which is the cause of countless blessings. And these two things do they ask him, when shall these things be? That is, the overthrow of the temple; and, what is the sign of your coming? But Luke says, the question was one concerning Jerusalem, as though they were supposing that then is His coming. And Mark says, that neither did all of them ask concerning the end of Jerusalem, but Peter and John, as having greater freedom of speech.
What then says He? Take heed that no man deceive you. For many shall come in my name, saying, I am Christ, and shall deceive many. And you shall hear of wars and rumors of wars. See that you be not troubled; for all these things must come to pass, but the end is not yet.
For since they felt as being told of vengeance falling on others when hearing of that which was to be brought upon Jerusalem and as though they were to be out of the turmoils, and were dreaming of good things only, and looked for these to befall them quite immediately; for this cause He again foretells to them grievous things, making them earnest, and commanding them on two grounds to watch, so as neither to be seduced by the deceit of them that would beguile them, nor to be overpowered by the violence of ills that should overtake them.
For the war, says He, shall be twofold that of the deceivers, and that of the enemies, but the former far more grievous, as coming upon them in the confusion and turmoils, and when men were terrified and troubled. For indeed great was the storm then, when the Roman power was beginning to flourish, and cities were taken, and camps and weapons were set in motion, and many were readily believed.
But of wars in Jerusalem is He speaking; for it is not surely of those without, and everywhere in the world; for what did they care for these? And besides, He would thus say nothing new, if He were speaking of the calamities of the world at large, which are happening always. For before this, were wars, and tumults, and fightings; but He speaks of the Jewish wars coming upon them at no great distance, for henceforth the Roman arms were a matter of anxiety. Since then these things also were sufficient to confound them, He foretells them all.
Then to show that He Himself also will assail the Jews with them, and war on them, He speaks not of battles only, but also of plagues sent from God, famines, and pestilences, and earthquakes, showing that the wars also He Himself permitted to come upon them, and that these things do not happen for no purpose according to what has been before the accustomed course of things among men, but proceed from the wrath on high.
Therefore He says, they shall come not by themselves or at once, but with signs. For that the Jews may not say, that they who then believed were the authors of these evils, therefore has He told them also of the cause of their coming upon them. For verily I say unto you, He said before, all these things shall come upon this generation, having made mention of the stain of blood on them.
Then lest on hearing of the showers of evils, they should suppose the gospel to be broken through, He added, See, be not troubled, for all things must come to pass, i.e. which I foretold, and the approach of the temptations will set aside none of the things which I have said; but there shall indeed be tumults and confusion, but nothing shall shake my predictions.