||This paper traces the shift from the inclusive beginnings of Christianity as a community of the unexpected gathered by Jesus during his earthly ministry, through the eventual division that continues to characterize Christianity in the third millennium. Significantly the teachings of Vatican II have returned to the early vision of the Church as a local community gathered to celebrate the Eucharist presided by a bishop. While ecumenical dialogue focuses on aspects that unify Christians, tensions continue to exist in the aspect of eucharistic sharing as Christians work to reestablish active communion. Through Vatican II's teachings regarding shared sacramental life between Catholics and those who do not share communion with Rome, division remains unresolved. Some Catholics and non-Roman Catholic Christians seek to participate in the Lord's Supper in a way that reflects their unity as a family. This thesis is a study of the developments and possibilities for eucharistic sharing.