Because for his name's sake they went forth, taking nothing of the Gentiles.
All Commentaries on 3 John 1:7 Go To 3 John 1
Cornelius a Lapide
AD 1637
For they have gone forth on
behalf of His name, viz, that they might preach the name of God and Christ, says Bede. Or else because for His name they have been driven into exile. The first of these is the more probable reason. And it is strengthened by what follows.
Taking nothing of the Gentiles. Because without price they preach the Gospel to the Gentiles, that they may not seem to gain any profit by the Gospel.