The New Testament assumes that all Christians will share in the life of the local church, meeting with it for worship (Heb 10:25), accepting its nurture and discipline (Matt 18:15-20; Gal 6:1), and sharing in its work of witness. Christians disobey God and impoverish themselves by refusing to join with other believers when there is a local congregation that they can belong to.
– J. I. Packer, Concise Theology: A Guide to Historic Christian Beliefs, 202