Matthew 18:17

If he refuses to listen to them, speak to the Church; and, if he also refuses to listen to the Church, treat him as you would a Gentile or a tax-gatherer.

1 Corinthians 5:5-6

To deliver such a man as this over to Satan, that what is sensual in him may be destroyed, so that his spirit may be saved at the Day of the Lord.

1 Corinthians 5:13

While God judges those who are outside? 'Put away the wicked man from among you.'

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