Matthew 18:17
"And if he shall neglect to hear them, tell it unto the church: but if he neglect to hear the church, let him be unto thee as an heathen man and a publican."
Cross References (ranked by relevance)
2 Thessalonians 3:6
11
Now we command you, brethren, in the name of our Lord Jesus Christ, that ye withdraw yourselves from every brother that walketh disorderly, and not after the tradition which he received of us.
Ezekiel 11:12
And ye shall know that I am the LORD: for ye have not walked in my statutes, neither executed my judgments, but have done after the manners of the heathen that are round about you.
Ezra 6:21
And the children of Israel, which were come again out of captivity, and all such as had separated themselves unto them from the filthiness of the heathen of the land, to seek the LORD God of Israel, did eat,