Observe here, What pains the apostle takes to answer all cavils and objections that might hinder the free collection and regular distribution of this charity. Some might pretend, possibly, to say then, (as many amongst us do now,) "We know not into whose hands this charity-money may fall; we know not whether ever they shall be the better for it, for whom it was intended." Therefore, says St. Paul, if any make that objection, that they do not know Titus, and inquire after him, or his trustiness, tell them he is my coadjutor, my partner and fellow-helper in converting you to Christianity; and if the other two be inquired after, they are our brethren, the messengers of the churches, and the glory of Christ; that is, the instruments of his glory; therefore let these messengers see, and the churches which did depute them, the proof of your love to me and to the saints, and that I did not boast of your liberality in vain.
Note here, The high honour which St. Paul puts upon the ministers of the gospel, in calling them the glory of Christ, that is, the glory of the gospel of Christ, the glory of the Christian profession, the instruments of Christ's glory, by whom his honour and glory is greatly promoted; persons who by their exemplary gloriousness did bring much honour and glory to Christ. This title I conceive shows both our dignity and duty; our dignity, in that Christ accounts us his glory when we are found faithful to him; as the faithfulness of an ambassador redounds to the glory and honour of the prince that sends him. And it points out our duty, to promote the glory of Christ, to pray and endeavour that he would use us as instruments for the advancement of his glory; that as we glorify him on earth, he may glory in us, and be glorified by us, before his Father in heaven, and we be presented faultless before the presence of his glory with exceeding joy. Amen.