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1 Corinthians 5:10

New International Version 1984 (NIV1984)

10 not at all meaning the people of this world who are immoral, or the greedy and swindlers, or idolaters. In that case you would have to leave this world.

From BibleGateway.com: http://www.biblegateway.com/passage/?search=1 Corinthians 5:10&version=NIV1984