I was overjoyed when some of the friends arrived and testified to your faithfulness to the truth, namely how you walk in the truth.
References for 3 John 1:3
I have no greater joy than this, to hear that my children are walking in the truth.
Beloved, you do faithfully whatever you do for the friends, even though they are strangers to you;
References for 3 John 1:5
they have testified to your love before the church. You will do well to send them on in a manner worthy of God;
for they began their journey for the sake of Christ, accepting no support from non-believers.
References for 3 John 1:7
Therefore we ought to support such people, so that we may become co-workers with the truth.