3 John 1:1; 3 John 1:5; 3 John 1:10

1 The elder to the beloved Gaius, whom I love in truth.
5 Beloved, you are acting faithfully in whatever you accomplish for the brethren, and especially when they are strangers;
10 For this reason, if I come, I will call attention to his deeds which he does, unjustly accusing us with wicked words; and not satisfied with this, he himself does not receive the brethren, either, and he forbids those who desire to do so and puts them out of the church.