Those on whom the apostle wishes to bestow spiritual grace for the encouragement of their faith, so that they will no longer be children, nor tossed about by every wind of doctrine—they are the truly blessed. Paul himself received comfort from seeing his work firm and stable, and they are comforted because they share in the apostolic grace.
Even Paul was not above the need of comfort. For right speech comforts the speaker as well. By this means Paul is teaching his followers not to be proud if they are called to teach. They are not giving what merely belongs to them when they teach. They come to realize that they not only minister to others’ needs but that they have needs themselves. For this is the fruit of the gospel. It is a blessing to those who preach it.
Paul says that he will be comforted with them insofar as they come to understand spiritual things. Even while he may rejoice in their faith, he nevertheless grieves insofar as they have not received the faith rightly. The apostle was the type to grieve for the faults of others as if they were his own. “And we are comforted by this,” he says, “by one and the same faith.” In this way the act of comforting is seamless. For it is by the unity of faith that they are brought to maturity in Christ. By this means the ministry of spiritual grace is given through the apostle’s preaching of the gospel and produces its own fruit.
As if he said, Do not suspect that I spoke to accuse you. It was not with this feeling that I said what I did. But what may it be that I wished to say? Ye are undergoing many tribulations, being drenched on every side (by those who persecute you). I desired then to see you, that I might comfort you, or rather, not that I might comfort you only, but that I might myself receive comfort. See the wisdom of the teacher. He said, to the end that "ye may be strengthened;" he knew that what he had said would be heavy and irksome to the disciples. He says, "to the end that ye may be comforted." But this again is heavy, not indeed to such a degree as the former, still it is heavy. He then pares down what is galling in this also, smoothing his speech on every side, and rendering it easy of acceptance. For he does not say barely, "to be comforted," but, "to be comforted together with you;" nor was he content with this but he puts in a further lenitive, when he says, "by the mutual faith both of you and me." Oh how great was his humble-mindedness! He showed himself also to be in need of them, and not them only of him. And he puts the disciples in the position of teachers, not letting any superiority remain upon his own side, but pointing out their full equality. For the gain is mutual, he means, and I need the comfort from you, and you that from me. And how comes this to pass? "Through the mutual faith both of you and me." For as in the case of fire, if any one gather together many lights, it is a bright flame that he kindles, thus also does it naturally happen with the faithful. For when we be by ourselves, torn away from others, we are somehow in worse spirits. But when we see one another, and are entwined with the members of our own selves, great is the comfort we receive. You must not look to the present time, during which, by God's grace, both in city and in the desert itself, there be many hosts of believers, and all impiety hath been driven out; but consider, in that time, how great a good it was both for disciples to see their master, and for brethren who had come from another city to be seen of brethren. But that I may make what I am saying plainer, let me bring the matter to an example. For if it should even happen and come to pass (may it never do so!) that we had been carried away to the land of the Persians or Scythians or other barbarians, and had been scattered (torn asunder) by twos and threes in their cities, and were then suddenly to see any one of those here coming to us, reflect what a harvest of comfort we should reap of it! See ye not those too who are in the prisons, if they see any of their acquaintance, how they revive, and are quite fluttering with the pleasure? But if I compare those days with captivity and imprisonment, count it no wonder. For these suffered far harder things than those, scattered as they were, and driven about, and dwelling in the midst of famine and of wars, and tremblingly expecting daily death, and suspecting friends and kindred and relatives, and dwelling in the world as in a strange land, aye, and in far harder plight than they who live in another's country. This is why he says, "to the end that ye may be established and comforted with us by our mutual faith."
Paul says this for fear of tripping up his hearers, who might not have known what to say to the prospect of sharing in some spiritual gift. For what could have been lacking in the teaching of Peter? Paul might be accused of criticizing Peter’s teaching … of thinking that he was a greater apostle than Peter, of claiming to be on closer terms with Christ and more beloved by Christ than Peter was. Fearing attacks of this kind, Paul first of all sets out the purpose of his coming, thereby sufficiently refuting the charge of presumption. Then he goes on to say not that he is giving them something but that he is going to share something with them, which is quite different.… Paul reassures them that he has no intention of preaching anything new to them but that he intends to confirm them in what they have already received from Peter.
[AD 253] Origen of Alexandria on Romans 1:12