An important homily for our times of great suffering in the Church is this one from John Chrysostom, one of the September Doctors of The Church. I have posted the entire homily here as it is so timely
Homily II.
   
Acts I. 6
   
“When they therefore were
      come together, they asked of Him, saying, Lord, wilt Thou at this time
      restore again the kingdom to Israel?”
   
   
When the disciples intend to ask anything, they approach Him together,
      that by dint of numbers they may abash Him into compliance. They well
      knew that in what He had said previously, “Of that day knoweth no
      man” (Matt. xxiv. 36), He had merely
      declined telling them: therefore they again drew near, and put the
      question. They would not have put it had they been truly satisfied with
      that answer. For having heard that they were about to receive the Holy
      Ghost, they, as being now worthy of instruction, desired to learn. Also
      they were quite ready for freedom: for they had no mind to address
      themselves to danger; what they wished was to breathe freely again; for
      they were no light matters that had happened to them, but the utmost
      peril had impended over them. And without saying any thing to Him of
      the Holy Ghost, they put this question: “Lord, wilt Thou at this
      time restore the kingdom to Israel?” They did not ask, when? but
      whether “at this time.” So eager were they for that day.
      Indeed, to me it appears that they had not any clear notion of the
      nature of that kingdom; for the Spirit had not yet instructed them.30 And they do not say, When shall these things
      be? but they approach Him with greater honour, saying, “Wilt Thou
      at this time restore again the kingdom,” as being now already
      fallen. For there they were still affected towards sensible objects,
      seeing they were not yet become better than those who were before them;
      here they have henceforth high conceptions concerning Christ. Since
      then their minds are elevated, He also speaks to them in a higher
      strain. For He no longer tells them, “Of that day not even the
      Son of Man knoweth” (Mark xiii. 32); but He says, It
      is not for you to know the times or the seasons which the Father hath
      put in His own power (Acts i. 7.) Ye ask things
      greater than your capacity, He would say. And yet even now they learned
      things that were much greater than this. And that you may see that this
      is strictly the case, look how many things I shall enumerate. What, I
      pray you, was greater than their having learned what they did learn?
      Thus, they learned that there is a Son of God, and that God has a Son
      equal with Himself in dignity (John v. 17–20); they learned that there will be a resurrection
      (Matt.
         xvii. 9); that when He ascended He sat on the right hand of God
      (Luke xxii. 69); and what is still more stupendous, that Flesh is seated in
      heaven, and adored by Angels, and that He will come again (Mark xvi. 19);
      they learned what is to take place in the judgment (Matt. xvi. 27); learned that
      they shall then sit and judge the twelve tribes of Israel (Luke xxi.
         27); learned that the Jews would be cast out, and in their stead the
      Gentiles should come in (Matt. xix. 28). For, tell me,
      which is greater? to learn that a person will reign, or to learn the
      time when? (Luke xxi. 24). Paul learned
      “things which it is not lawful for a man to utter”
      (2 Cor. xii. 4); things that were before the world was made, he learned
      them all. Which is the more difficult, the beginning or the end?
      Clearly to learn the beginning. This, Moses learned, and the time when,
      and how long ago: and he enumerates the years. And31
      the wise Solomon saith, “I will make mention of things from the
      beginning of the world.” And that the time is at hand, they do
      know: as Paul saith, “The Lord is at hand, be careful for
      nothing.” (Phil. iv. 5). These things they
      knew not [then], and yet He mentions many signs (Matt. ch. xxiv). But, as He has just
      said, “Not many days hence,” wishing them to be vigilant,
      and did not openly declare the precise moment, so is it here also.
      However, it is not about the general Consummation that they now ask
      Him, but, “Wilt Thou at this time,” say they,
      “restore the kingdom to Israel?” And not even this did He
      reveal 12to them. They also asked this [about the end of the world]
      before: and as on that occasion He answered by leading them away from
      thinking that their deliverance was near and, on the contrary, cast
      them into the midst of perils, so likewise on this occasion but more
      mildly. For, that they may not imagine themselves to be wronged, and
      these things to be mere pretences, hear what He says: He immediately
      gives them that at which they rejoiced: for He adds: “But ye
      shall receive power, after that the Holy Ghost is come upon you; and ye
      shall be witnesses unto Me both in Jerusalem, and in all Judea, and in
      Samaria, and unto the uttermost part of the earth.” (Acts i. 8.)
      Then, that they may make no more enquiries, straightway He was received
      up. Thus, just as on the former occasion He had darkened their minds by
      awe, and by saying, “I know not;” here also He does so by
      being taken up. For great was their eagerness on the subject, and they
      would not have desisted; and yet it was very necessary that they should
      not learn this. For tell me,32 which do the
      Gentiles most disbelieve? that there will be a consummation of the
      world, or that God is become man, and issued from the Virgin?33 But I am ashamed of dwelling on this
      point, as if it were about some difficult matter. Then again, that the
      disciples might not say, Why dost thou leave the matter in suspense? He
      adds, “Which the Father hath put in His own power.” And yet
      He declared the Father’s power and His to be one: as in the
      saying, “For as the Father raiseth up the dead and quickeneth
      them, even so the Son quickeneth whom He will.” (John v. 21.)
      If where need is to work, Thou actest with the same power as the
      Father; where it behooves to know, dost Thou not know with the same
      power? Yet certainly to raise up the dead is much greater than to learn
      the day. If the greater be with power, much more the other.
   
   
But just as when we see a child
      crying, and pertinaciously wishing to get something from us that is not
      expedient for him, we hide the thing, and show him our empty hands, and
      say, “See, we have it not:” the like has Christ here done
      with the Apostles. But as the child, even when we show34 him [our empty hands], persists with his
      crying, conscious he has been deceived, and then we leave him, and
      depart, saying, “Such an one calls me:” and we give him
      something else instead, in order to divert him from his desire, telling
      him it is a much finer thing than the other, and then hasten away; in
      like manner Christ acted.35 The disciples asked
      to have something, and He said He had it not. And on the first occasion
      he frightened them. Then again they asked to have it now: He said He
      had it not; and He did not frighten them now, but after having shown36 [the empty hands], He has done this, and
      gives them a plausible reason:37 “Which the
      Father,” He says, “hath put in his own power.” 
Moreover the Angels did not say,
      ‘whom you have seen taken up,’ but, “going into
      heaven:” ascension is the word, not assumption; 14the expression
      “taken up,”41 belongs to the flesh.
      For the same reason they say, “He which is taken up from you
      shall thus come,” not, “shall be sent,” but,
      “shall come. He that ascended, the same is he also that
      descended” (Eph. iv. 10). So again the
      expression, “a cloud received Him:” for He Himself mounted
      upon the cloud. Of the expressions, some are adapted to the conceptions
      of the disciples, some agreeable with the Divine Majesty. Now, as they
      behold, their conceptions are elevated: He has given them no slight
      hint of the nature of His second coming. For this, “Shall
      thus come,” means, with the body; which thing they desired
      to hear; and, that he shall come again to judgment “thus”
      upon a cloud. “And, behold, two men stood by them.” Why is
      it said, “men?” Because they had fashioned themselves
      completely as such, that the beholders might not be overpowered.
      “Which also said:” their words moreover were calculated for
      soothing: “Why stand ye gazing up into heaven?” They would
      not let them any longer wait there for Him. Here again, these tell what
      is greater, and leave the less unsaid. That “He will thus
      come,” they say, and that “ye must look for Him from
      heaven.” For the rest, they called them off from that spectacle
      to their saying, that they might not, because they could not see Him,
      imagine that He was not ascended, but even while they are conversing,
      would be present ere they were aware. For if they said on a former
      occasion, “Whither goest Thou?” (John xiii. 36) much more would
      they have said it now.42
“Wilt Thou at this
      time,” say they, “restore the kingdom to Israel?”
      (Recapitulation). They so well knew his mildness, that after His
      Passion also they ask Him, “Wilt thou restore?” And yet He
      had before said to them, “Ye shall hear of wars and rumors of
      wars, but the end is not yet,” nor shall Jerusalem be taken. But
      now they ask Him about the kingdom, not about the end. And besides, He
      does not speak at great length with them after the Resurrection. They
      address then this question, as thinking that they themselves would be
      in high honor, if this should come to pass. But He (for as touching
      this restoration, that it was not to be, He did not openly declare; for
      what needed they to learn this? hence they do not again ask,
      “What is the sign of Thy coming, and of the end of the
      world?” for they are afraid to say that: but, “Wilt Thou
      restore the kingdom to Israel?” for they thought there was such a
      kingdom), but He, I say, both in parables had shown that the time was
      not near,43 and here where they asked, and He answered
      thereto, “Ye shall receive power,” says He, “when the
      Holy Ghost is come upon you. Is come upon you,” not, “is
      sent,” [to shew the Spirit’s coequal Majesty. How then
      darest thou, O opponent of the Spirit, to call Him a creature44?]. “And ye shall be witnesses to
      Me.” He hinted at the Ascension. [“And when he had spoken
      these things.45] Which they had heard before, and He
      now reminds them of. [“He was taken up.”] Already it has
      been shown, that He went up into heaven. [“And a cloud,
      etc.”] “Clouds and darkness are under His feet,”
      (Ps. xviii. 9; xcvii. 2) saith the Scripture:
      for this is declared by the expression, “And a cloud received
      Him:” the Lord of heaven, it means. For as a king is shown by the
      royal chariot, so was the royal chariot sent for Him. [“Behold,
      two men, etc.] That they may vent no sorrowful exclamations, and that
      it might not be with them as it was with Elisha, (2 Kings ii. 12)
      who, when his master was taken up, rent his mantle. And what say they?
      “This Jesus, which is taken up from you into heaven, shall thus
      come.” And, “Behold, two men stood by them.”
      (Matt.
         xviii. 16.) With good reason: for “in the mouth of two witnesses
      shall every word be established” (Deut. xvii. 6): and these utter
      the same things. And it is said, that they were “in white
      apparel.” In the same manner as they had already seen an Angel at
      the sepulchre, who had even told them their own thoughts; so here also
      an Angel is the preacher of His Ascension; although indeed the Prophets
      had frequently foretold it, as well as the Resurrection.46
15 Everywhere it is Angels as at
      the Nativity, “for that which is conceived in her,” saith
      one, “is by the Holy Ghost” (Matt. i. 20): and again to
      Mary, “Fear not, Mary.” (Luke i. 30.) And at the
      Resurrection: “He is not here; He is risen, and goeth before
      you.” (ib. xxiv. 6.) “Come, and
      see!” (Matt. xxviii. 6.) And at the Second
      Coming. For that they may not be utterly in amaze, therefore it is
      added, “Shall thus come.” (ib. xxv. 31.) They recover their
      breath a little; if indeed He shall come again, if also thus come, and
      not be unapproachable! And that expression also, that it is “from
      them” He is taken up, is not idly added.47 And
      of the Resurrection indeed Christ Himself bears witness (because of all
      things this is, next to the Nativity, nay even above the Nativity, the
      most wonderful: His raising Himself to life again): for,
      “Destroy,” He says, “this Temple, and in three days
      I48 will raise it up.” (John ii. 19.)
      “Shall thus come,” say they. If any therefore desires to
      see Christ; if any grieves that he has not seen Him: having this heard,
      let him show forth an admirable life, and certainly he shall see Him,
      and shall not be disappointed. For Christ will come with greater glory,
      though “thus,” in this manner, with a body49; and much more wondrous will it be to see
      Him descending from heaven. But for what He will come, they do not
      add.
   
   
[“Shall thus come,”
      etc.] This is a confirmation of the Resurrection; for if he was taken
      up with a body, much rather must He have risen again with a body. Where
      are those who disbelieve the Resurrection? Who are they, I pray? Are
      they Gentiles, or Christians? for I am ignorant. But no, I know well:
      they are Gentiles, who also disbelieve the work of Creation. For the
      two denials go together: the denial that God creates any thing from
      nothing, and the denial that He raises up what has been buried. But
      then, being ashamed to be thought such as “know not the power of
      God” (Matt. xxii. 29), that we may not
      impute this to them, they allege: We do not say it with this meaning,
      but because there is no need of the body. Truly it may be seasonably
      said, “The fool will speak foolishness.” (Is. xxxii. 6.)
      Are you not ashamed not to grant, that God can create from nothing? If
      he creates from matter already existing, wherein does He differ from
      men? But whence, you demand, are evils? Though you should not know
      whence, ought you for that to introduce another evil in the knowledge
      of evils? Hereupon two absurdities follow. For if you do not grant,
      that from things which are not, God made the things which are, much
      more shall you be ignorant whence are evils: and then, again, you
      introduce another evil, the affirming that Evil (τὴν
         κακίαν) is
      uncreated. Consider now what a thing it is, when you wish to find the
      source of evils, to be both ignorant of it, and to add another to it.
      Search after the origin of evils, and do not blaspheme God. And how do
      I blaspheme? says he. When you make out that evils have a power equal
      to God’s; a power uncreated. For, observe what Paul says;
      “For the invisible things of Him from the creation of the world
      are clearly seen, being understood by the things that are made.”
      (Rom. i. 20.) But the devil would have both to be of matter, that there may
      be nothing left from which we may come to the knowledge of God. For
      tell me, whether is harder: to50 take that which is by
      nature evil (if indeed there be ought such; for I speak upon your
      principles, since there is no such thing as evil by nature), and make
      it either good, or even coefficent of good? or, to make of nothing?
      Whether is easier (I speak of quality); to induce the non-existent
      quality; or to take the existing quality, and change it into its
      contrary? where there is no house, to make the house; or where it is
      utterly destroyed, to make it identically exist again? Why, as this is
      impossible, so is that: to make a thing into its opposite. Tell me,
      whether is harder; to make a perfume, or to make filth have the effect
      of perfume? Say, whether of these is easier (since we subject God to
      our reasonings: nay, not we, but ye); to form eyes, or to make a blind
      man to see continuing blind, and yet more sharp-sighted, than one who
      does see? To make blindness into sight, and deafness into hearing? To
      me the other seems easier. Say then do 16you grant God that which is
      harder, and not grant the easier? But souls also they affirm to be of
      His substance. Do you see what a number of impieties and absurdities
      are here! In the first place, wishing to show that evils are from God,
      they bring in another thing more impious than this, that they are equal
      with Him in majesty, and God prior in existence to none of them,
      assigning this great prerogative even to them! In the next place, they
      affirm evil to be indestructible: for if that which is uncreated can be
      destroyed, ye see the blasphemy! 



