If any man come to you, and bring not this doctrine, receive him not into the house nor say to him, God speed you.
Yeah how are you supposed to convert him then?
Jesus himself ate in the houses of publicans and prostitutes.
Such people were also heretics and not exactly holy.
Or are you implying christians should only talk to those who are a blank slate?
Then who on earth is a blank slate?
Or are you saying it should be an echo chamber?
Then who will fill the echo chamber when the beginning few are gone.
Answer me that.
( and as pertains to my own situation, I was boycotted even though my doctrine was Catholic at the time. Just to be clear)