2 John 1:9-11

9 [AF] Anyone who is so "progressive" [7] as not to remain in the teaching of the Christ does not have God; whoever remains in the teaching has the Father and the Son.

10 [8] If anyone comes to you and does not bring this doctrine, do not receive him in your house or even greet him; [AG]

11 for whoever greets him shares in his evil works.