But this is not how the actual biblical passage reads and is a grave misunderstanding of Jesus' words. Jesus says, "...if he refuses to listen even to the church, treat him as you would a pagan or a tax collector." While the church has often interpreted this passage as the license and liberty to excommunicate the unrepentant sinner, this is actually the EXACT OPPOSITE of Jesus' words. Jesus is not asking us to break communion with pagans and tax collectors, because these are the very people with whom Jesus frequently communed. He constantly befriended and loved those who the world loved to hate. He constantly communed with all the 'wrong' people. He constantly loved the unlovable.
"Treat him as you would a pagan or a tax collector"
With these challenging and engaging words, Jesus is inviting his followers to actively engage and commune with people who are resisting the way of Jesus. He's not asking us to break these relationships and solely commune with those that are like us. He is inviting us to push further into community and fellowship with those who badly need the good news of Jesus. May we have the courage to not resist and avoid relationships with the other, those different than us, and our enemies.
P.S. To add one more thought - I don't think it is just random coincidence that the section of text following this passage on church discipline is the story of Jesus telling Peter he must forgive others 70 x 7 times. What do you do when someone has wronged you? Sure doesn't look like Jesus wants you to kick them out of church.