Matthew 18:17
If he refuses to listen to them, tell the congregation. And if he refuses to listen to it, treat him as a heathen or a tax-collector.
John 9:22
His parents said this because they were afraid of the Jews, for the Jews had already made an agreement that if anyone acknowledged Jesus as the Christ, he should be excluded from the synagogues.
John 9:34
They answered, "You were born in utter sin, and are you trying to teach us?" So they excluded him from the synagogue.
John 16:2
They will exclude you from their synagogues; why, the time is coming when anyone who kills you will think he is doing religious service to God.
1 Corinthians 5:13
and God's, to judge those who are outside? You must drive the wrongdoer out from among you.