'Office' in the Bible

This is a true saying, If a man desire the office of a bishop, he desireth a good work.

And let these also first be proved; then let them use the office of a deacon, being found blameless.

For they that have used the office of a deacon well purchase to themselves a good degree, and great boldness in the faith which is in Christ Jesus.

The elders who perform their leadership duties well are to be considered worthy of double honor (financial support), especially those who work hard at preaching and teaching [the word of God concerning eternal salvation through Christ].