The Council of Agde was a regional synod held in September 506 at Agatha or Agde, on the Mediterranean coast east of Narbonne, in the Septimania region of the Visigothic Kingdom, with the permission of the Visigothic King Alaric II.The Council met under the presidency of Bishop Caesarius of Arles. It was attended by 35 bishops:

The Council of Agde promulgated 47 canons on ecclesiastical discipline. In general, its canons shed light on the moral conditions of the clergy and laity in the historical region of Septimania at the beginning of the transition from Roman social order within the Roman province of Gallia Narbonensis to that of the Visigoth migrants. They are also of some importance for the study of certain early ecclesiastical institutions.

Its canon 7, forbidding ecclesiastics to sell or alienate the property of the church from which they drew their living, seems to be the earliest indication of the later system of benefices. In Canon IX, the Council ruled that if married deacons or priests wish to return to marital relations, they should be deprived of all of their ecclesiastical dignities and offices; those, however, who were unaware of the prohibition, could be allowed to retain their office if they abstain in the future. In Canon X, a cleric was forbidden to visit women to whom he was not related, and could have in his house only his mother, sister, daughter, or niece. A bishop was not to ordain anyone a deacon who was not yet twenty-five years old. In order to be ordained a priest or bishop, one had to be at least thirty years of age. If a young married man wished to be ordained, he required the consent of his wife (Canon XVI).

Marriage between cousins was also forbidden.

A bishop is an ordained member in a religious institution, who is entrusted with a position of authority and oversight.

In traditional Christianity, bishops claim apostolic succession, a direct historical lineage dating back to the original Twelve Apostles. The bishops are by doctrine understood as those who possess the full priesthood given by Jesus Christ, and therefore may ordain other clergy, including other bishops. A person ordained as a deacon, priest, and then bishop is understood to hold the fullness of the (ministerial) priesthood, given responsibility by Christ to govern, teach, and sanctify the Body of Christ. Priests, deacons and lay ministers co-operate and assist their bishops in pastoral ministry.

Some Pentecostal churches have bishops who oversee congregations, though they do not claim apostolic succession.