The Priest (or celebrant) is the main minster of Mass. He is to act in "persona Christi" or "person of Christ". The Priest gives Communion to the people in good standing and without mortal sin. He too, must be out of mortal sin in order to say Mass. Any Priest could be celebrant at Mass (depending on the parish). Mostly a Pastor would act as celebrant every sunday. A Bishop could also act as celebrant during a Pontifical High Mass.
by Skyrim550 December 17, 2021