Elders and Congregationalism 2

1a) Wherein does an elders authority consist?
b) What is the source of the Elders authority?
c) What if the church refuses to consent with the Eldership?
2) What is the duty of the church towards Elders?
3) Are there different offices of Elders?
4) Is there then such a thing as ruling and teaching Elders?
5) The principal duties of Elders
6) Elders plural is one of the continuing offices of the church
7) A man needs to be furnished with the proper gifts of the Holy Spirit to be an Elder