16:1-16 Paul recommends Phebe to the Christians at Rome. It becomes Christians to help one another in their affairs, especially strangers; we know not what help we may need ourselves. Paul asks help for one that had been helpful to many; he that watereth shall be watered also himself. Though the care of all the churches came upon him daily, yet he could remember many persons, and send salutations to each, with particular characters of them, and express concern for them. Lest any should feel themselves hurt, as if Paul had forgotten them, he sends his remembrances to the rest, as brethren and saints, though not named. He adds, in the close, a general salutation to them all, in the name of the churches of Christ.
4. who have for my life laid down—"who did for my life lay down"
their own necks—that is, risked their lives; either at Corinth (Ac 18:6, 9, 10), or more probably at Ephesus (Ac 19:30, 31; and compare 1Co 15:32). They must have returned from Ephesus (where we last find them in the history of the Acts) to Rome, whence the edict of Claudius had banished them (Ac 18:2); and doubtless, if not the principal members of that Christian community, they were at least the most endeared to our apostle.
unto whom not only I give thanks, but also all the churches of the Gentiles—whose special apostle this dear couple had rescued from imminent danger.