'Overseer' in the Bible

This is a faithful and trustworthy saying: if any man [eagerly] seeks the office of overseer (bishop, superintendent), he desires an excellent task.

Now an overseer must be blameless and beyond reproach, the husband of one wife, self-controlled, sensible, respectable, hospitable, able to teach,

For the overseer, as God’s steward, must be blameless, not self-willed, not quick-tempered, not addicted to wine, not violent, not greedy for dishonest gain [but financially ethical].