2 John 1:7; 2 John 1:10

7 For many deceivers have gone out into the world, people who do not acknowledge Yeshua the Messiah's coming as a human being. Such a person is a deceiver and an anti-Messiah.
10 If someone comes to you and does not bring this teaching, don't welcome him into your home. Don't even say, "Shalom!" to him;