Gaius, who is host to me and to the whole church, greets you. Erastus, the city treasurer, and our brother Quartus, greet you.
As the Apostle had before sent his own salutations to many of this church, and that of the churches round him to them all, he here adds an affectionate remembrance of them from some particular persons who were now with him, the better to promote acquaintance and fellowship among distant saints, and that the subscribing of these worthy names, known to them, might the more recommend this epistle.
Commenting on Romans 16:21-24
The grace of our Lord Jesus Christ be with you all. Amen. This verse is placed by the Syriac at the end of the chapter, and is wanting in the Ethiopic version, and in one ancient copy, being, excepting the word all, the same as at the end of Rom 16:20; but inasmuch as it is in all other copies, it ought to be repeated...
Verse 23. Gaius mine host. Who has received me into his house, and shown me hospitality. The word host means one who entertains another at his own house without reward. And of the whole church. Who has opened his house to entertain all Christians; or to show hospitality to them all.