In 1 Cor 5, Paul rebuked the Corinthian church for tolerating individuals inside the church who lived blatantly sinful lifestyles. Paul says that not only were they continuing to fellowship with these wicked individuals, but they were prideful and boasted in their spirituality. Paul instructed them to expel such immoral brethren, that they may turn from their ways in repentance and be restored again to fellowship. But if they continued to tolerate these individuals inside the church, everyone else will be affected, as " a little yeast works through the whole batch of dough".