The Council of Twelve Apostles is composed of twelve persons who hold the priesthood office of Apostle. Together with the First Presidency and the Presiding Bishopric they comprise the World Church Leadership Council. They are primarily responsible for the church's missionary outreach and field administration. They are called to bear their personal testimonies as a special witness of Jesus Christ and to enable the church to bear its witness as Community of Christ. They administer the work of the church in the field and they oversee the seventies in the area of missionary work. One of the apostles is set apart as president of the council. There are revelations in the Doctrine & Covenants that suggest that the Apostles are, in some sense, equal in authority to the First Presidency itself, but the logistics of such equality are unclear.