Fear the uncertainty of the future. “As a thief in the night,” so death comes: and not merely as a thief, but while we sleep it sets upon us, and carries us off while we are idling. To this end has God made the future uncertain, that we may spend our time in the practice of virtue, because of the uncertainty of expectation. But He is merciful, say you. How long shall we hear this senseless, ridiculous talk? I affirm not only that God is merciful, but that nothing can be more merciful than He, and that He orders all things concerning us for our good.
How many all their life do you see afflicted with the worst form of leprosy! (ἐ ν ἐλέφαντι διάγοντας, “Elephantiasis,”) how many blind from their earliest youth even to old age! Others who have lost their eyesight, others in poverty, others in bonds, others again in the mines, others entombed (καταχωσθέντας) together, others (slaughtered) in wars! These things say you, do not look like mercy. Say, could He not have prevented these things had He wished, yet He permits them?
True, say you. Say, those who are blind from their infancy, why are they so? I will not tell you, until you promise me to receive baptism, and, being baptized, to live aright. It is not right to give you the solution of these questions. The preaching is not meant just for amusement. For even if I solve this, on the back of this follows another question: of such questions there is a bottomless deep. Therefore do not get into a habit of looking to have them solved for you: else we shall never stop questioning.
For look, if I solve this, I do but lead the way to question upon question, numberless as the snowflakes. So that this is what we learn, rather to raise questions, not to solve the questions that are raised. For even if we do solve them, we have not solved them altogether, but (only) as far as man's reasoning goes. The proper solution of such questions is faith: the knowing that God does all things justly and mercifully and for the best: that to comprehend the reason of them is impossible.
This is the one solution, and another better than this exists not. For say, what is the use of having a question solved? This, that one needs no longer to make a question of the thing which is solved. And if you get yourself to believe this, that all things are ordered by the Providence of God, Who, for reasons known to Himself, permits some things and actively works others, you are rid of the need of questioning, and hast gotten the gain of the solution. But let us come back to our subject.
Do you not see such numbers of men suffering chastisements? God (say you) permits these things to be. Make the right use of the health of the body, in order to the health of the soul. But you will say, What is the use to me of labors and toil, when it is in my power to get quit of all (my sins) without labor? In the first place, this is not certain. It may happen, that a person not only does not get quit of his sins without labor, but that he departs hence with all his sins upon him.
However, even if this were certain, still your argument is not to be tolerated. He has drawn you to the contests: the golden arms lie there. When you ought to take them, and to handle them, you wish to be ingloriously saved, and to do no good work! Say, if war broke out, and the Emperor were here, and you saw some charging into the midst of the phalanxes of the enemy, hewing them down, dealing wounds by thousands, others thrusting (with the sword's point), others hounding (now here, now there), others dashing on horseback, and these praised by the Emperor, admired, applauded, crowned: others on the contrary thinking themselves well off if they take no harm, and keeping in the hindmost ranks, and sitting idly there; then after the close of the war, the former sort summoned, honored with the greatest gifts, their names proclaimed by the heralds: while of the latter, not even the name becomes known, and their reward of the good obtained is only that they are safe: which sort would you wish to belong to?
Why, if you were made of stone, if you were more stupid even than senseless and lifeless things, would you not ten thousand times rather belong to the former? Yea, I beseech and implore you. For if need were to fall fighting, ought you not eagerly to choose this? See you not how it is with them that have fallen in the wars, how illustrious they are, how glorious? And yet they die a death, after which there is no getting honor from the emperor. But in that other war, there is nothing of the kind, but you shall in any wise be presented with your scars. Which scars, even without persecutions, may it be granted all us to have to exhibit, through Jesus Christ our Lord, with Whom to the Father and the Holy Ghost together be glory, dominion, honor, now and ever, and world without end. Amen.
Source: Homilies on Acts (New Advent)