I reckon its important to say a few things about what the priesthood of believers is and isn’t. In 1 Peter 2, the context there implies that we are priests in the sense that we have access to God, that we don’t need an intermediary to access the throne room, because the writer to the Hebrews states clearly that Jesus is the Great High Priest in the order of Melchizadek…he, Jesus himself, is our intermediary between us and the Father.
The priesthood of all believers, from the context of 1 Pe 2 appears to be actually about the identity as the laos, the people of God, the holy nation simply because we have access to God which enables us to pray, worship and interpret the scripture for ourselves. This priesthood does not give license or function because it is about identity, not function. We are priestly only in that we can pray, worship, give and dedicate ourselves to God as holy people to participate in the work of the body the same as every other Christian. The natural outflow of our spiritual priesthood is that we are all then recipients of Holy Spirit and his giftings for taking our place in the body ministry.
If its was the case that it gave license or function, we wouldn’t be reading about elders and deacons being appointed in the new testament, nor would we need the five-fold ministies in Ephesians 4 because each ‘priest’ would do all that those roles do for themselves.
The priesthood doesn’t preclude the role of leadership and doesn’t imply that all the priesthood are leaders. It does mean that together we can fulfil the call of God where as we’d fail if we were relying on one person to communicate that. It is a perversion of this doctrine, though, to say that everyone is always right even when they say different things….this is why it is important the emphasis the priesthood of ALL believers, not the priesthood of THE believer.
Priesthood of all believers = identity of the people who can access God through the ‘stone in Zion, a chosen and precious cornerstone’ (Jesus) fundamentally through his grace and who make up the rest of the spiritual temple in which the Holy Spirit lives which then enables us to function as the body together.
That make sense?