2 John 1:9 - 1:11
9 Anyone who goes too far and does not abide in the teaching of Christ, does not have God. The one who abides in the teaching, he has both the Father and the Son. 10 If anyone comes to you and does not bring this teaching, do not receive him into your house, and do not give him a greeting, 11 for the one who gives him a greeting participates in his evil deeds.