What's the Role of Priestly Language in the Old Testament?

The way in which julian smith takes christ's messianic kingship as sort of a lense for what it would mean to live the good life, as he calls it, can't remember. I think i one of the things enoch mentions at the end of his book is that paul speaks of himself in romans 15, as having priestly ministry. In the romans eight, eight 34 passage where he absolutely as resetatin te right hand. O, lads, interceding on our behalf.