In addition to reading the Gospel and assisting in the administration of Holy Communion, the deacon censes the icons and people, calls the people to prayer, leads the litanies, and has a role in the dialogue of the Anaphora. In keeping with Eastern tradition he is not permitted to perform any Sacred Mysteries (sacraments) on his own, except for Baptism in extremis (in danger of death), conditions under which anyone, including the laity, may baptize. When assisting at a normal baptism, it is often the deacon who goes down into the water with the one being baptized (Acts 8:38). In contrast to the Roman Catholic Church, deacons in the Eastern Churches may not preside at the celebration of marriages, as in Eastern theology the sacrament is conferred by the nuptial blessing of a priest.