3 John 1:9 - 1:10
9 I wrote something to the church, but Diotrephes, who loves to be first among them, does not welcome what we say. 10 For this reason, if I come, I will bring to remembrance his deeds which he does, unjustly disparaging us with wicked words. And not satisfied with this, he himself does not welcome the brothers either, and he forbids those who want to do so and puts them out of the church.