2 Timothy 1:18

He wishes him mercy in the age to come, when he says, in that day in which the Lord will judge us all, when mercy will be needed, not only in Rome, but at Ephesus. For this he is deserving of God's mercy.

Onesiphorus, says the apostle, showed me mercy; therefore may he receive recompense on that fearful day; then much mercy is needed by all, even by the saints. If Onesiphorus, who exposed himself to obvious dangers for Christ, will be saved by mercy, how much more …

If you would have mercy then, you must seek for it now of the Lord. It is of and from the Lord that we must have mercy; for, unless the Lord has mercy on us, in vain will be the pity and compassion of men or angels. We are to seek and ask for mercy of the Lord, who is the giver and bestower of it; for the Lord Jesus Christ has satisfied justice, that mercy might be displayed.

The Lord grant - that he may find mercy of the Lord - Some think that this is a prayer to God the Father to communicate grace to him, that he might find mercy in the great day at the hand of Jesus Christ the Judge. It is probably only a Hebraism for, God grant that he may here be so saved by Divine grace, that in the great day he may receive the mercy of the Lord Jesus Christ unto eternal life. See a similar form of expression, Gen 9:16; Gen 19:24; Exo 24:1, Exo 24:

GRATITUDE is never failing in Christians. When they have received a benefit, they are sure to acknowledge it. When Paul was at Rome, Onesiphorus found him out very diligently, and was not ashamed of his chains, but ministered to his necessities and, therefore, Paul felt bound to him and to his family in perpetual thankfulness. Let none of us ever be accused of ingratitude—it is one of the worst of sins. Paul, no doubt, would have done all he could for Onesiphorus in other ways, but he added to all other ways of showing his gratitude, that of praying for him—praying the prayer which we have here put on record in the Book of Inspiration. Learn hence that if we can do nothing else for our benefactors, we can bless them by our prayers. Let us be abundant in pouring out supplications before the Throne of God for all those who in any way have done us a service. We also learn from the text that the best of men have need to be prayed for. I cannot doubt but that Onesiphorus was saved. He seems to have been a most decided follower of Christ, for when others did not know Paul because he was a prisoner, Onesiphorus knew him. He sought him out—he sought him out diligently— even into the poorest quarters of that great city of Rome. He hunted him out, though probably the population at that time was not less, but perhaps far more than four millions of people. He found the Apostle and he ministered unto his need. He was a good man and yet Paul prayed for him—prayed for him a prayer which would be appropriate for a bad man, too, "The Lord grant that he may find mercy from the Lord in that day!" The best of us needs to be prayed for! Let us be thankful if we have anybody to pray for us. Let us count the prayers of the faithful to be our truest riches.

GRATITUDE is never failing in Christians. When they have received a benefit, they are sure to acknowledge it. When Paul was at Rome, Onesiphorus found him out very diligently, and was not ashamed of his chains, but ministered to his necessities and, therefore, Paul felt bound to him and to his family in perpetual thankfulness. Let none of us ever be accused of ingratitude—it is one of the worst of sins.

The Lord grant unto him that he may find mercy of the Lord in that day - The day of judgment; notes at 2Ti 1:12. This proves that Onesiphorus was then alive, as Paul would not offer prayer for him if he was dead. The Papists, indeed, argue from this in favor of praying for the dead - assuminG from 2Ti 4:19, that Onesiphorus was then dead. But there is no evidence of that. The passage in 2Ti 4:19, would prove only that he was then absent from his family. And in how many things he ministered unto me at Ephesus - This was the home of Onesiphorus, and his family was still there; 2Ti 4:19. When Paul was at Ephesus, it would seem that Onesiphorus had showed him great kindness. His affection for him did not change when he became a prisoner. True friendship, and especially that which is based on religion, will live in all the vicissitudes of fortune, whether we are in prosperity or adversity; whether in a home of plenty, or in a prison. This chapter is full of interest, and may suggest many interesting reflections. We see: (1) A holy man imprisoned and about to die. He had nearly finished his course, and had the prospect of soon departing. (2) He was forsaken by his friends, and left to bear his sorrows alone. They on whom he might have relied, had left him; and to all his outward sufferings, there was added this, one of the keenest which his Master endured before him, that his friends forsook him, and left him to bear his sorrows alone. (3) Yet his mind is calm, and his faith in the gospel is unshaken. He expresses no regret that he had embraced the gospel; no sorrow that he had been so zealous in it as to bring these calamities upon himself. […]