3 John 1:3-8

For I was greatly pleased when [some of the] brothers came [from time to time] and testified to your [faithfulness to the] truth [of the gospel message], that is, how you are walking in truth. I have no greater joy than this, to hear that my [spiritual] children are living [their lives] in the truth. Beloved, you are acting faithfully in what you are providing for the brothers, and especially when they are strangers; and they have testified before the church of your love and friendship. You will do well to [assist them and] send them on their way in a manner worthy of God. For these [traveling missionaries] went out for the sake of the Name [of Christ], accepting nothing [in the way of assistance] from the Gentiles. So we ought to support such people [welcoming them as guests and providing for them], so that we may be fellow workers for the truth [that is, for the gospel message of salvation].