Jude 1:19

Who separate themselves - From the true Church, which they leave from an affectation of superior wisdom.

Sensual - Ψυχικοι· Animal - living as brute beasts, guided simply by their own lusts and passions, their Bible being the manifold devices and covetousness of their own hearts; for they have not the Spirit - they are not spiritually minded; and have no Holy Ghost, no inspiration from God.

These be they who separate themselves - That is, from their brethren and from the work of benevolence and truth. Compare Romans 16:17; Judges 5:16, Judges 5:23.

Sensual - Under the influence of gross passions and appetites.

Having not the spirit - The Holy Spirit, or the spirit of true religion.

1:19 These are they who separate themselves, sensual, not having the Spirit - Having natural senses and understanding only, not the Spirit of God; otherwise they could not separate. For that it is a sin, and a very heinous one, to separate from the church, is out of all question. But then it should be observed, That by the church is meant a body of living Christians, who are an habitation of God through the Spirit: That by separating is understood, renouncing all religious intercourse with them; no longer joining with them in solemn prayer, or the other public offices of religion: and, That we have no more authority from scripture to call even this schism, than to call it murder.