7 It was for the sake of the Name that they went out, receiving no help from the pagans.

Read 3 John 1:7 Using Other Translations

Because that for his name's sake they went forth, taking nothing of the Gentiles.
For they have gone out for the sake of the name, accepting nothing from the Gentiles.
For they are traveling for the Lord, and they accept nothing from people who are not believers.