What does the Bible say about separating from the church?

The Bible highlights that separation from the church is sinful and is considered a work of the flesh. The apostle Jude points out that those who separate themselves are devoid of the Spirit and often indulge in sensuality. This separation not only shows a lack of necessity and warrant from God but embodies a rejection of Christian love and unity. In Galatians 5:20, schisms and heresies are also classified among the works of the flesh, indicating the serious nature of such divisions. Those who separate do so at the cost of leaving behind the community that nurtures their faith and growth in grace, directly contradicting Christ's prayer for unity among believers (John 17:21).