It came from early church leaders who wanted to exert their power, authority, and control over other people. (redeeminggod.com)
Whatever seeming consistencies in your Bible were purposefully selected by early Church leaders in choosing only ancient Middle Eastern writings which toed their «party line». (religion.blogs.cnn.com)
This leaves two main types of early Church leaders: deacons and elders / bishops. (premierchristianity.com)