III. Triune Baptism commissions us to Ministry
All of these tasks ultimately root in our anointment with the Holy Spirit and appointment to serve the Lord — as symbolized in our having been baptized in the name of the Triune God (Matthew 28:19). And just as the various tasks of the Father and the Son and the Holy Spirit are distinct from one another (in spite of much overlap), so too are the prophetic and the priestly and the kingly tasks of every triunely-baptized Believer altogether distinct — despite overlap.
So too are especially the different functions of the Preachers and the Elders and the Deacons distinct from one another — in spite of overlap. And so too are the functions of all Christians distinct from the functions of all the various kinds of Special Ministers — in spite of overlap.