Where is it in the (Christian) bible that refers to sending away a guy who was

JN

Member
preaching in a detrimental way? I can't for the life of me recall where it was... Basically I know of a passage that refers to it and I'd like to shove it in the face of those frustrating individuals who post things like "Click this or God will kill you" guilt posts that make Christians look like something they're not at all supposed to be.
 
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