Bede

And not a hair of your head will perish. We know that flesh cut feels pain, hair cut does not feel pain. Therefore, he says to his martyrs: Not a hair of your head will perish, evidently saying openly: Why do you fear lest what is cut and feels pain will perish, when even that in you which is cut and feels no pain cannot perish? In another sense: Not a hair of the head of the disciples of the Lord will perish, because not only the strong deeds or words of saints, of which it is said: The Lord preserves all their bones (Psalm 33), but also the volatile (so to speak) and most delicate surface of the thoughts of the faithful, which emerges from the hidden root of the heart, as hair from the brain, will be preserved with due reward by the just judge. Hence rightly the Prophet, to show how much the merits of even good thoughts are accepted by the Lord, says: And the leftovers of thoughts will feast for you (Psalm 76). Hence the Nazarenes in the law, during the time of consecration, are commanded to nurture their hair, and it is said that a razor did not come upon the head of Samuel. Conversely, the captive woman in order to marry an Israelite man, cleansed from leprosy to be worthy to communicate with the Church, is commanded to shave all the hair of her body, because evidently every thought of the wise, which is good, pleasing, and perfect, is saved forever, and its reward is with the Lord. But the thought of the foolish and wicked, as an unworthy root before the sight of God, must be cut off through repentance.

Hitherto our Lord had been speaking of those things which were to come to pass for forty years, the end not yet coming. He now describes the very end itself of the desolation, which was accomplished by the Roman army; as it is said, And when ye shall see Jerusalem compassed, &c.

(Ecc. Hist. lib. iii. c. 5.) The ecclesiastical history relates, that all the Christians who were in Judæa, when the destruction of Jerusalem was approaching, being warned of the Lord, departed from that place, and dwelt beyond the Jordan in a city called Pella, until the desolation of Judæa was ended.

But how, while the city was already compassed with an army, were they to depart out? except that the preceding word "then" is to be referred, not to the actual time of the siege, but the period just before, when first the armed soldiers began to disperse themselves through the parts of Galilee and Samaria.

And these are the days of vengeance, that is, the days exacting vengeance for our Lord's blood.

He says then, Woe to them that nurse, or give suck, as some interpret it, whose womb or arms now heavy with the burden of children, cause no slight obstacle to the speed of flight.

Which indeed the Apostle makes mention of when he says, Blindness in part is happened to Israel, and so all Israel shall be saved. (Rom. 11:25.) Which when it shall have gained the promised salvation, hopes not rashly to return to the land of its fathers.

And there will be signs in the sun, and moon, and stars, and on the earth distress of nations, in perplexity because of the roaring of the sea and the waves. For as the Lord indicates in the following, when the universal judgment appears, heaven and earth will pass away, and as we read in the Apocalypse of John, the sea will be no more, rightly therefore, with the same judgment impending, the roaring of the sea and waves is confused, the inhabitants of the earth pressing upon each other are afflicted, the great lights of the sky having their rays struck with new horror hide their troubled face. And just as trees thrust to fall are accustomed to emit signs of their crash and movement, so the elements, as if anxious with the approach of their end, tremble and waver. Therefore, what Matthew says: The sun will be darkened, and the moon will not give its light, and the stars will fall from the sky (Matt. 24), signifies the very presence of judgment, when with the appearance of the true glory of light, all the lights of the world are compared to darkness and shadows. However, what Luke says: There will be signs in the sun, and moon, and stars, he indicates as precursors, as heralds of the coming judgment. Among these is that of the Prophet: The sun will be turned into darkness, and the moon into blood, before the great and manifest day of the Lord comes (Joel 2). Also what Luke says: And on the earth distress of nations, I believe this to be what Matthew describes when speaking of the times of the Antichrist: For then there will be great tribulation, such as has not been from the beginning of the world until now, nor ever will be (Matt. 24). But what Luke adds, in perplexity because of the roaring of the sea and the waves, is a foretelling of what John saw among the other changes of the age concerning the sea.

Men will wither away from fear and expectation of what is coming upon the entire world. For the powers of the heavens will be shaken. I believe this sentence signifies the very advent of the judge, when, according to another parable, all, that is, both wise and foolish virgins, roused by an unusual cry, trim their lamps, that is, they count their works with them, for which, with great fear, they are now expecting the imminent event of eternal judgment. For until then, nearly the entire world will act without any fear of the judge, as testified by the apostle who says: For when they say, 'Peace and safety,' then sudden destruction will come upon them (I Thess. V). Then therefore, with fear and expectation of the strict examination coming upon the whole world, many who seemed to flourish in this world will wither when they see themselves fruitless. Then faith, which flourished without works, will wither, as proven by the righteous Judge. Nor is it surprising that men, that is either by nature or by earthly sense, are disturbed at His judgment, whose presence even the powers of the heavens, that is, the angelic hosts, tremble at, as testified by the blessed Job who says: The pillars of heaven tremble and are astonished at His rebuke. What, then, will the planks do when the columns tremble? What will the twig of the desert endure when the cedar of paradise is shaken?