3 John 1:8

We therefore. Because the missionaries took nothing from the heathen, and because there was no regular support from a treasury at that time, it was necessary that men like Gaius help the workers and thus relieve them of the necessity of asking alms. By his use of “we” John acknowledges his own duty in this matter of hospitality.

Ought. See on 1 John 2:6.

Receive. Gr. apolambanō, “to take back,” or “to receive from,” but textual evidence favors (cf. p. 10) the reading hupolambanō, here used in the sense “to support.”

Such. That is, those mentioned in v. 7. John is careful to define those who qualify for the believers’ hospitality (cf. on 2 John 10, 11).

Fellowhelpers. Rather, “fellow workers.” Those who aid the workers are themselves counted as workers.

To the truth. There are two possible interpretations to this phrase: (1) the hospitable members are fellow workers with the missionaries in proclaiming truth; (2) the hospitable ones are fellow workers with truth, truth being personified. John’s use of the word “truth” makes the second interpretation acceptable (cf. 1 John 1:6; 2:4; 3 John 3, 4; etc.).