Believe me, I am not even able to finish my words, from the grief which lays hold of my soul at this relation. Consider of how great glory we shall be deprived, when it is in our power not to be deprived of it. For this is the misery, that we suffer these things, when it is in our power not to suffer them. When he receives the one part and leads them to His Father in heaven, and rejects the other, whom Angels take and drag against their will, weeping, and hanging down their heads, to the fire of hell, when they have first been made a spectacle to the whole world, what grief, think you, is there? Let us then make haste, while there is time, and take great thought of our own salvation. How many things have we to say like the rich man? If any one would now suffer us, we would take counsel of the things that are profitable! But no one does suffer us. And that we shall so say, is clear, not from him alone, but from many others. And that you may learn this, how many men have been in fevers, and said, if we recover, we shall never again fall into the same state. Many such words we shall then say, but we shall be answered as the rich man was, that there is a gulf, that we have received our good things here. Let us groan then, I entreat you, bitterly, rather let us not only groan, but pursue virtue too; let us lament now, for salvation, that we may not then lament in vain. Let us weep now, and not weep then, at our evil lot. This weeping is of virtue, that of unprofitable repentance; let us afflict ourselves now, that we may not then; for it is not the same thing to be afflicted here and there. Here, you are afflicted for a little time, or rather thou dost not perceive your affliction, knowing that you are afflicted for your good. But there, the affliction is more bitter, because it is not in hope, nor for any escape, but without limit, and throughout.
But may we all be freed from this, and obtain remission. But let us pray and be diligent, that we may obtain the remission. Let us be diligent, I entreat; for if we are diligent, we prevail even through our prayer: if we pray earnestly, God grants our request; but if we neither ask Him, nor do earnestly anything of this sort, nor work, how is it possible that we should ever succeed? By sleeping? Not at all. For it is much if even by running, and stretching forth, and being conformed to His death, as Paul said, we shall be able to succeed, not to say sleeping. “If by any means I may attain,” says he. But if Paul said, “If by any means I may attain,” what shall we say? For it is not possible by sleeping to accomplish even worldly business, not to say spiritual. By sleeping, not even from friends can anything be received, far less from God. Not even fathers honor them who sleep, far less does God. Let us labor for a little time, that we may have rest for ever. We must at all events be afflicted. If we are not afflicted here, it awaits us there. Why choose we not to be afflicted here, that there we may have rest, and obtain the unspeakable blessings, in Christ Jesus, with whom, to the Father together with the Holy Spirit, be glory, power, and honor, now and ever, world without end. Amen.
Source: Homilies on Philippians (New Advent)