3 John 5-7
5 Beloved, it is a fine and faithful work that you are doing when you give any service to the [Christian] brethren, and [especially when they are] strangers.
6 They have testified before the church of your love and friendship. You will do well to forward them on their journey [and you will please do so] in a way worthy of God's [service].
7 For these [traveling missionaries] have gone out for the Name's sake (for His sake) and are accepting nothing from the Gentiles (the heathen, the non-Israelites).