Having (Ti2 1:13, Ti2 1:14) exhorted Timothy to hold fast,

I.He mentions the apostasy of many from the doctrine of Christ, Ti2 1:15. It seems, in the best and purest ages of the church, there were those that had embraced the Christian faith, and yet afterwards revolted from it, nay, there were many such. He does not say that they had turned away from the doctrine of Christ (though it should seem they had) but they had turned away from him, they had turned their backs upon him, and disowned him in the time of his distress. And should we wonder at it, when many turned their backs on a much better than Paul? I mean the Lord Jesus Christ, Joh 6:66.

II.He mentions the constancy of one that adhered to him, namely, Onesiphorus: For he often refreshed me, and was not ashamed of my chain, Ti2 1:16. Observe, 1. What kindness Onesiphorus had shown to Paul: he refreshed him, he often refreshed him with his letters, and counsels, and comforts, and he was not ashamed of his chains. He was not ashamed of him, not withstanding the disgrace he was now under. He was kind to him not once or twice, but often; not only when he was at Ephesus among his own friends, but when Onesiphorus was at Rome; he took care to seek Paul out very diligently, and found him, Ti2 1:17. Observe, A good man will seek opportunities of doing good, and will not shun any that offer. At Ephesus he had ministered to him, and been very kind to him: Timothy knew it. 2. How Paul returns his kindness, Ti2 1:16-18. He that receives a prophet shall have a prophet's reward. He repays him with his prayers: The Lord give mercy to Onesiphorus. It is probable that Onesiphorus was now absent from home, and in company with Paul; Paul therefore prays that his house might be kept during his absence. Though the papists will have it that he was now dead; and, from Paul's praying for him that he might find mercy, they conclude the warrantableness of praying for the dead; but who told them that Onesiphorus was dead? And can it be safe to ground a doctrine and practice of such importance on a mere supposition and very great uncertainty?

III.He prays for Onesiphorus himself, as well as for his house: That he may find mercy in that day, in the day of death and of judgment, when Christ will account all the good offices done to his poor members as done to himself. Observe, 1. The day of death and judgment is an awful day, and may be emphatically called that day. 2. We need desire no more to make us happy than to find mercy of the Lord in that day, when those that have shown no mercy will have judgment without mercy. 3. The best Christians will want mercy in that day; looking for the mercy of our Lord Jesus Christ, Jde 1:21. 4. If you would have mercy then, you must seek for it now of the Lord. 5. 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. 6. 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. We are to come to a throne of grace, that we may obtain mercy, and find grace to help in the time of need. 7. The best thing we can seek, either for ourselves or our friends, is that the Lord will grant to them that they may find mercy of the Lord in that day, when they must pass our of time into eternity, and exchange this world for the other, and appear before the judgment-seat of Christ: the Lord then grant unto all of us that we may find mercy of the Lord in that day.

The Lord give mercy - Onesiphorus had acknowledged him, and continued to do so; he, and his house, or family, ministered to him in prison, and were not ashamed of their imprisoned pastor, nor of the cause for which he was in disgrace and suffering. As he showed mercy to the apostle, the apostle prays the Lord to show mercy to him.

The Lord give mercy to the house of Onesiphorus,.... Who seems to have been one of Asia, and of Ephesus, and is an exception from the general apostasy, or from those that turned away from the apostle; and therefore he prays that the Lord would show mercy to his family; that he would give regenerating grace and mercy to such of them as were without it, or pardoning grace and mercy, or the great mercy of eternal life and salvation by Christ; and this doubtless was a prayer in faith, upon the promises of God, and upon instances and examples, in which God has remarkably shown mercy to the families of good men, who have faithfully served him, and abode in his interest in times of trouble; thus the house of Obed Edom was blessed for the sake of the ark, that was taken care of by them; the reasons of this prayer and good wishes follow:

for he oft refreshed me; both with his Christian visits, and spiritual conversation, which to the apostle, in the heat of his affliction and persecution, were like a fan in hot weather, cooling and reviving, as the word signifies; and also by supplying him with the necessaries of life, as food and raiment, or money to purchase them with. He answered to his name, which signifies, "one that brings profit": he is said to be one of the seventy disciples; See Gill on Luk 10:1 and afterwards to be bishop of Corone:

and was not ashamed of my chain; the Syriac version adds, "with which I am bound"; in which he lay, or by which he was held, and led by a soldier; see Act 28:16. Onesiphorus was not ashamed of the apostle, though he was bound with a chain; nor was he ashamed of the cause for which he suffered: and the apostle proposes him to Timothy, as an example worthy of imitation, in those times of defection. See Ti2 1:8.

The Lord give mercy--even as ONESIPHORUS had abounded in works of mercy.

the house of Onesiphorus--He himself was then absent from Ephesus, which accounts for the form of expression (Ti2 4:19). His household would hardly retain his name after the master was dead, as BENGEL supposes him to have been. Nowhere has Paul prayers for the dead, which is fatal to the theory, favored by ALFORD also, that he was dead. God blesses not only the righteous man himself, but all his household.

my chain--Paul in the second, as in his first imprisonment, was bound by a chain to the soldier who guarded him.