Wherefore I also. This thanksgiving was not simply an expression of his ardent love to the Ephesians. He congratulated them before God, that the opinion which he had formed respecting them was highly favorable. Observe here, that under faith and love Paul includes generally the whole excellence of Christian character. He uses the expression, faith in the Lord Jesus, [1] because Christ is the aim and object of faith. Love ought to embrace all men, but here the saints are particularly mentioned; because love, when properly regulated, begins with them, and is afterwards extended to all others. If our love must have a view to God, the nearer any man approaches to God, the stronger unquestionably must be his claims to our love.

Footnotes

1 - "Having heard of your faith in the Lord Jesus.' It is wrong to argue from this expression, with Olshausen and De Wette, that the apostle had no personal knowledge of the persons whom he addressed. This was an early surmise, for it is referred to by Theodoret. Some, says he, have supposed that the apostle wrote to the Ephesians, hos medepo theasamenos autous, (as having never seen them.) But some years had elapsed since the apostle had visited Ephesus, and seen the Ephesian Church; and might he not refer to reports of their Christian steadfastness which had reached him? Nay, his use of the word may signify that such intelligence had been repeatedly brought to him." -- Eadie.

Wherefore, I also, after I heard of your faith in the Lord Jesus - This is one of the passages usually relied on by those who suppose that this Epistle was not written to the Ephesians. The argument is, that he writes to them as if they were strangers to him, and that it is not language such as would be used in addressing a people among whom he had spent three years; see the introduction, section 5. But this inference is not conclusive. Paul had been some years absent from Ephesus when this Epistle was written. In the difficult communication in those times between distant places, it is not to be supposed that he would hear often from them. Perhaps he had heard nothing after the time when he bade farewell to the elders of Ephesus at Miletus Acts 20, until the time here referred to. It would be, therefore, a matter of great interest with him to hear from them; and when in some way intelligence was brought to him at Rome of a very gratifying character about their growth in piety, he says that his anxiety was relieved, and that he did not cease to give thanks for what he had heard, and to commend them to God in prayer.

Faith in the Lord Jesus - Cordial reception of the Christian religion, amply proved by their love to all the saints - to all the Christians. Perhaps love here implies, not only the kind affection so called, but also all the fruits of love - benevolence, and kind offices of every description.

(17) Wherefore I also, after I heard of your faith in the Lord Jesus, and love unto all the saints,
(17) He returns to the former account of the good received from God, concluding two things together about those things that went before: the first is that all good things come to us from God the Father in Christ, and by Christ, so that for them he may be praised by us. The second is, that all those things (which he brings to two heads, that is, faith and charity) are increased in us by certain degrees, so that we must desire an increase of his grace, from whom we have the beginning, and from whom we hope for the end.

Wherefore I also,.... As well as others:
after I heard of your faith in the Lord Jesus; who is the immediate object of faith, and a very proper and suitable one; having every thing in him that is agreeable to the case and circumstances of those that trust in him. And the grace of faith, which terminates on him, is a seeing him, a beholding the glory of his person, and the fulness of his grace; a going to him, and venturing on him; a laying hold upon him, and embracing of him; a committing all unto him, and a leaning and depending on him, and a living upon him, and a walking on in him.
And love unto all the saints: whether Jew or Gentile, rich or poor, greater or lesser believers, of meaner gifts, or larger abilities; and which love was unfeigned, fervent, active, and laborious; and which is the evidence of regeneration, and without which a profession is in vain. These two graces, faith and love, are inseparable; they always go together, and are to be found in the same persons; and where they are, they cannot be hid, as they were not in these Ephesians; their faith was professed by them, and was made public, and their love showed itself in deeds, as well as in words, to the saints: hence the apostle came to hear of them both, upon the certain relation of others; for these things were come abroad, and were talked of; See Gill on Colossians 1:3. See Gill on Colossians 1:4. See Gill on Plm 1:4. See Gill on Plm 1:5.

God has laid up spiritual blessings for us in his Son the Lord Jesus; but requires us to draw them out and fetch them in by prayer. Even the best Christians need to be prayed for: and while we hear of the welfare of Christian friends, we should pray for them. Even true believers greatly want heavenly wisdom. Are not the best of us unwilling to come under God's yoke, though there is no other way to find rest for the soul? Do we not for a little pleasure often part with our peace? And if we dispute less, and prayed more with and for each other, we should daily see more and more what is the hope of our calling, and the riches of the Divine glory in this inheritance. It is desirable to feel the mighty power of Divine grace, beginning and carrying on the work of faith in our souls. But it is difficult to bring a soul to believe fully in Christ, and to venture its all, and the hope of eternal life, upon his righteousness. Nothing less than Almighty power will work this in us. Here is signified that it is Christ the Saviour, who supplies all the necessities of those who trust in him, and gives them all blessings in the richest abundance. And by being partakers of Christ himself, we come to be filled with the fulness of grace and glory in him. How then do those forget themselves who seek for righteousness out of him! This teaches us to come to Christ. And did we know what we are called to, and what we might find in him, surely we should come and be suitors to him. When feeling our weakness and the power of our enemies, we most perceive the greatness of that mighty power which effects the conversion of the believer, and is engaged to perfect his salvation. Surely this will constrain us by love to live to our Redeemer's glory.

Wherefore--because ye are in Christ and sealed by His Spirit (Ephesians 1:13-14).
I also--on my part, in return for God's so great benefits to you.
after I heard--ever since I have heard. Not implying that he had only heard of their conversion: an erroneous argument used by some against the address of this Epistle to the Ephesians (see on Ephesians 1:1); but referring to the report he had heard since he was with them, as to their Christian graces. So in the case of Philemon, his "beloved fellow laborer" (Plm 1:1), he uses the same words (Plm 1:4-5).
your faith--rather, as Greek, "the faith among you," that is, which many (not all) of you have.
love unto all the saints--of whatever name, simply because they are saints. A distinguishing characteristic of true Christianity (Ephesians 6:24). "Faith and love he often joins together. A wondrous pair" [CHRYSOSTOM]. Hope is added, Ephesians 1:18.

After I heard of your faith. This verse has been thought to show that Paul was not personally acquainted with those to whom he wrote, and hence that this letter could not be addressed to the Ephesians; but he used similar language of Philemon, one of his own converts. See Philemon 5. The language is natural if Paul left Ephesus in the spring of A. D. 57, and wrote this letter about the close of A. D. 62 (Conybeare and Howson), more than five years after. During this period he could only know of the faith and love of the Ephesians by what he heard.
Cease not to give thanks. Because he heard so favorable a report.

Since I heard of your faith and love - That is, of their perseverance and increase therein.