Verse 7. Because that for his name's sake. The word "his" here refers to God; and the idea is, that they had undertaken this journey not on their own account, but in the cause of religion.

They went forth. Or, they have gone forth -- exhlyon -- referring to the journey which they had then undertaken; not to the former one.

Taking nothing of the Gentiles. The term Gentile embraced all who were not Jews, and it is evident that these persons went forth particularly to labour among the heathen. When they went, they resolved, it seems, to receive no part of their support from them, but to depend on the aid of their Christian brethren, and hence they were at first commended to the church of which Gains and Diotrephes were members, and on this second excursion were commended particularly to Gains.

Why they resolved to take nothing of the Gentiles is not stated, but it was doubtless from prudential considerations, lest it should hinder their success among them, and expose them to the charge of being actuated by a mercenary spirit. There were circumstances in the early propagation of Christianity which made it proper, in order to avoid this reproach, to preach the gospel "without charge," though the doctrine is everywhere laid down in the Bible that it is the duty of those to whom it is preached to contribute to its maintenance, and that it is the right of those who preach to expect and receive a support. On this subject, See Barnes "1 Co 9:15, See Barnes "1 Co 9:18".

{a} "taking nothing" 1 Co 9:15,18