2 John 1:1; 2 John 1:6; 2 John 1:10; 2 John 1:11

2 John 1:1

1 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;

2 John 1:6

6 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.

2 John 1:10

10 If there come any unto you, and bring not this doctrine, receive him not into your house, neither bid him God speed:

2 John 1:11

11 For he that biddeth him God speed is partaker of his evil deeds.