Matthew 18:17

If he refuses to hear them, appeal to the Church; and if he refuses to hear even the Church, regard him just as you regard a Gentile or a tax-gatherer.

1 Corinthians 5:5-6

I have handed over such a man to Satan for the destruction of his body, that his spirit may be saved on the day of the Lord Jesus.

1 Corinthians 5:13

while you leave to God's judgement those who are outside? Remove the wicked man from among you.

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