1 Corinthians 5:13 YLT

¹¹  and now, I did write to you not to keep company with 'him', if any one, being named a brother, may be a whoremonger, or covetous, or an idolater, or a railer, or a drunkard, or an extortioner -- with such a one not even to eat together;

¹²  for what have I also those without to judge? those within do ye not judge?

¹³  and those without God doth judge; and put ye away the evil from among yourselves.