Wherefore I desire. His reason for alluding formerly to his imprisonment is now manifest. It was to prevent them from being discouraged when they heard of his persecution. [1] O heroic breast, which drew from a prison, and from death itself, comfort to those who were not in danger! He says that, he endured tribulations for the Ephesians, because they tended to promote the edification of all the godly. How powerfully is the faith of the people confirmed, when a pastor does not hesitate to seal his doctrine by the surrender of his life! And accordingly he adds, which is your glory. Such lustre was thrown around his instructions, that all the churches among whom he had labored, had good reason to glory, when they beheld their faith ratified by the best of all pledges.

Footnotes

1 - "The original word ekkakein signifies to behave like a coward, and through fear to desert the post of battle.'" -- Chandler.

Wherefore I desire that ye faint not - The connection here is this. Paul was then a prisoner at Rome. He had been made such in consequence of his efforts to diffuse the Christian religion among the Gentiles; see the notes at Ephesians 3:1. His zeal in this cause, and the opinions which he held on this subject, had roused the wrath of the Jews, and led to all the calamities which he was now suffering. Of that the Ephesians. he supposes, were aware. It was natural that they should be distressed at his sufferings, for all his privations were endured on their account. But here he tells them not to be troubled and disheartened. He was indeed suffering; but he was reconciled to it, and they should be also, since it was promoting their welfare. The word rendered "faint" - ἐκκακέω egkakeō - means literally, to turn out "a coward," or to lose one's courage; then to be fainthearted, etc.; notes, 2-Corinthians 4:1. It is rendered "faint" in Luke 18:1; 2-Corinthians 4:1, 2-Corinthians 4:16; Ephesians 3:13, and "weary" in Galatians 6:9; 2-Thessalonians 3:13. It does not elsewhere occur. It is rendered here by Locke "dismayed." Koppe supposes it means that they should not suppose that the Christian religion was vain and false because he was suffering so much from his countrymen on account of it. But it rather means that they might be in danger of being discouraged by the fact that "he" was enduring so much. They might become disheartened in their attachment to a system of religion which exposed its friends to such calamities. Paul tells them that this ought not to follow. They were to be profited by all his sufferings, and they should, therefore, hold fast to a religion which was attended with so many benefits to them - though he should suffer.
Which is your glory - Which tends to your honor and welfare. You have occasion to rejoice that you have a friend who is willing thus to suffer for you; you have occasion to rejoice in all the benefits which will result to you from, his trials in your behalf.

I desire that ye faint not - In those primitive times, when there was much persecution, people were in continual danger of falling away from the faith who were not well grounded in it. This the apostle deprecates, and advances a strong reason why they should be firm: "I suffer my present imprisonment on account of demonstrating your privileges, of which the Jews are envious: I bear my afflictions patiently, knowing that what I have advanced is of God, and thus I give ample proof of the sincerity of my own conviction. The sufferings, therefore, of your apostles are honorable to you and to your cause; and far from being any cause why you should faint, or draw back like cowards, in the day of distress, they should be an additional argument to induce you to persevere."

Wherefore I desire that ye faint not at my tribulations for you,.... The apostle was a man attended with many tribulations, and great afflictions, which he did not suffer as an evildoer, either from God or men; wherefore he was not ashamed of them, but gloried in them; yea, he took pleasure in them, having much of the presence of God in them; they did not come to him unawares, he always expected them, and was helped to look to the glory which should follow them, the view of which greatly supported him under them; and these tribulations were endured for the sake of the elect, for Christ's body's sake; the church, and among others, for the Ephesians, for the sake of preaching the Gospel among them, and for the confirmation of their faith in it; and yet they were a stumbling to them, they were ready to faint at them; but he desires they would not, since they were on account of the Gospel, which he had such a distinct knowledge of, and so clear a call to; and since they were for their sakes, and since he and they had such nearness of access to God by the faith of Christ, with so much boldness and confidence; and seeing also they turned to their account: which is your glory; meaning either that it was matter of glorying to them, and what they might boast of, that the apostle's afflictions were not for any crime that was found in him, but for preaching the Gospel to them, and that it was an honour to suffer in such a cause; or that their perseverance and constancy in the doctrines of the Gospel, notwithstanding the scandal of the cross, would be an honour to them.

The apostle seems to be more anxious lest the believers should be discouraged and faint upon his tribulations, than for what he himself had to bear. He asks for spiritual blessings, which are the best blessings. Strength from the Spirit of God in the inner man; strength in the soul; the strength of faith, to serve God, and to do our duty. If the law of Christ is written in our hearts, and the love of Christ is shed abroad there, then Christ dwells there. Where his Spirit dwells, there he dwells. We should desire that good affections may be fixed in us. And how desirable to have a fixed sense of the love of God in Christ to our souls! How powerfully the apostle speaks of the love of Christ! The breadth shows its extent to all nations and ranks; the length, that it continues from everlasting to everlasting; the depth, its saving those who are sunk into the depths of sin and misery; the height, its raising them up to heavenly happiness and glory. Those who receive grace for grace from Christ's fulness, may be said to be filled with the fulness of God. Should not this satisfy man? Must he needs fill himself with a thousand trifles, fancying thereby to complete his happiness?

"I entreat you not to be dispirited."
for you--in your behalf.
which is--rather, "which are your glory," namely, inasmuch as showing that God loved you so much, as both to give His Son for you, and to permit His apostles to suffer "tribulations" for you [CHRYSOSTOM] in preaching the Gospel to the Gentiles. See on Ephesians 3:1, "prisoner for you Gentiles." My tribulations are your spiritual "glory," as your faith is furthered thereby (1-Corinthians 4:10).

The not fainting is your glory.