This word is used in scripture indefinitely for any one in authority, there being seven Hebrew words so translated. In the N.T. are
1. πράκτωρ, from 'to do or act,' it occurs only in Luke 12:58 . It is used for the officer appointed to exact the money adjudicated by the judge.
2. ὑπηρέτης, lit. 'an under-rower,' a subordinate officer, who assisted the priests and the Roman governors. Matthew 5:25; John 7:32,45,46; John 18:3-22; John 19:6; Acts 5:22,26 . It is also translated 'minister' and 'servant.'