".… persons who devote themselves permanently or temporarily to some special service of the Church are obliged to acquire appropriate formation which is required to fulfill their function properly and to carry it out conscientiously, zealously, and diligently." (USCCB)
Co-Workers in the Vineyard of the Lord is a 2005 resource produced in English and Spanish by the United States Conference of Catholic Bishops (USCCB) to assist those who are responsible for guiding the development of lay ecclesial ministry in the United States.