What is a Bishop?

Key to Apostolic Succession (AS) is the bishop. The bishop has Biblical origins. The role is bishop in the Roman Catholic Church (RCC) and Eastern Orthodox Church (EOC) seems to be different than the bishop as described in the New Testament (NT) in several ways.

In the EOC and RCC, bishops cannot be married. In the NT, bishops are allowed to be married:

1 Tim 3:2 The bishop therefore must be without reproach, the husband of one wife, temperate, sober-minded, orderly, given to hospitality, apt to teach;

In the EOC canons there can't be more then one bishop in a given city. In the NT, there were multiple bishops in Philipi.

Phil 1:1 Paul and Timothy, servants of Christ Jesus, to all the saints in Christ Jesus that are at Philippi, with the bishops and deacons:

The NT bishop is more like the role of priest in the RCC and EOC. His sphere of influence seems to be a city rather than a large area or country.

The differences noted here are studied as the "rise of the monarchical bishop" in church history.