With its origin in the New Testament, Ordination has always been seen by the majority of Churches as one of the seven Sacraments. As the time passed the specific forms, roles, rites, and rules that established the validity of the Sacrament of Ordination adapted at the same time with the Church. The roles of the clergy suffered many changes either by exchanging some of the roles between themselves or by eliminating some of these roles and creating new ones. The idea is that the functions and duties of the minor orders have been in a continuous change due to the dynamic character and the needs of the Church. Some minor orders either developed into new ones or absorbed others.