Not so. Scripture, although it lists specific offices which are essential --- deacons (diaconoi), priests (presbyeroi), and bishops (espiscopoi)--- nowhere limits the number of offices. Scripture, unlike the U.S. Constitution, does not set up a U.S. type government with balance of power (as in federalism), separation of power (as in distinct, immutable powers distributed across the executive, legislative, and judicial branches) and enumerated powers (roles and responsibilities limited to those explicitly set forth.)
How I wish, by the way, that our U.S. governmet followed its wn Constitution!!
But back to the subject at hand: Christ's church is not so much an organization, as an organism. St. Paul returns again and again to that explanation, in speaking of the Members of the Body of Christ. The Church is at liberty to organize herself as necessary, to carry out her mission.
You render unto Caesae only that which is Caesar's! No More!!
Catholics have been shown often enough that presbyeroi is not priest.