2 John 1:1; 2 John 1:6; 2 John 1:10-11
The elder unto the elect lady and her children, whom I love in the truth; and not I only, but also all they that have known the truth;
And this is love, that we walk after his commandments. This is the commandment, That, as ye have heard from the beginning, ye should walk in it.
If there come any unto you, and bring not this doctrine, receive him not into your house, neither bid him God speed :
For he that biddeth him God speed is partaker of his evil deeds.