The sacraments of baptism and the Eucharist are generally thought necessary to salvation. Popovtsy have priests, bishops and all sacraments, including the Eucharist. The BCP identifies Baptism and the Eucharist as the "two great sacraments of the Gospel". When discussing the sacrament of Holy Orders in his book "Science of the Sacraments". The first three Sacraments of Initiation are Baptism, Communion, and Confirmation. The Salvation Army does not practice water baptism, or indeed other outward sacraments. Things ministerial are such items as the Bible, church, sacraments, doctrine and priesthood. The two Healing Sacraments are Anointing of the Sick and Penance. The liturgies of the sacraments are central to the church's mission. Puritans taught that there were two sacraments&colon; baptism and the Lord's Supper. The two Sacraments of Vocation are Matrimony and Holy Orders. Deacons may serve in a pastoral office and administer sacraments. The valid marriage of baptized Christians is one of the seven Roman Catholic sacraments. The Six Articles reaffirmed a traditional view of the Mass, the Sacraments, and the priesthood. The catechism is organized on the topics of faith, law, prayer and sacraments.