The Brethren in Christ do not impose a unified doctrine regarding the millennium (the thousand-year reign described in Revelation 20). Members of the denomination hold various eschatological positions, with both premillennialism (Christ returns before a literal thousand-year reign) and amillennialism (the thousand years is symbolic; Christ reigns spiritually now) represented.

Historically, some Anabaptist traditions have been cautious about detailed speculative eschatology, preferring to focus on ethical living and witness to Christ in the present. The denomination's emphasis on pacifism and Kingdom ethics can reflect both eschatological positions.

What unites the denomination is not a common millennialism but a commitment to Kingdom living now—nonresistance, justice, community, and discipleship. Whether Christ returns before or after a millennium matters less than faithful witness and obedience in the present age. The denomination has never required agreement on this doctrine.