Self-interested motives are typically assumed when addressing migration causation. However, values, such as those from religion, can also motivate migration. This study develops a theoretical framework of religiously motivated migration. Inasmuch as values are derived from and reinforced within groups, religions with strong cohesion are more likely to act on one of three value-based religious migration motivations: sacred command, context conducive for religious practice, and awareness of potential membership losses from competition. This theoretical framework is demonstrated through Amish-Mennonite migration. Generalizability is suggested from a brief review of the Puritans, Jews, Muslims, Mormons, and Russian Mennonites.