Paul and Peter listed and described specific “functions” for elders/overseers… God’s people in “every tribe and language and people and nation” (Rev. 5:9) and at any period in history need oversight, teaching, admonishing, and prayer. However, the specific “functions” for the deacons are never spelled out in detail – except the one that is inherent in their title – to “serve” (diakoneo). The generic “function” must be fleshed out in various ways from place to place at different points in time and history…as they assist the elders/overseers in carrying out their shepherding responsibilities.