Romans 16:5

The Church that is in their house - In these primitive times no such places existed as those which we now term churches; the word always signifying the congregation or assembly of believers, and not the place they assembled in. See the term defined at the end of the notes, Matthew 16:28 (note).

Epenetus - the first fruits of Achaia - In I Corinthians 16:15, the house or family of Stephanas is said to be the first fruits of Achaia: how then can it be said here, that Epenetus was the first fruits, or first person who had received the Gospel in that district? Ans. - Epenetus might have been one of the family of Stephanas; for it is not said that Stephanas was the first fruits, but his house or family; and there can be no impropriety in supposing that one of that house or family was called Epenetus; and that this person, being the only one of the family now at Rome, might be mentioned as the first fruits of Achaia; that is, one of that family which first received the Gospel in that country. This would rationally account for the apparent difficulty, were we sure that , of Achaia, was the true reading: but this is more than doubtful, for , of Asia, is the reading of ABCDEFG, some others; the Coptic, Ethiopic, Armenian, Vulgate, and Itala; and some of the chief of the fathers. On this evidence Griesbach has admitted it into the text. Yet the other reading is sufficiently natural, for the reasons already assigned.