This priest is a member of the clergy. A clergyman or clergyperson.
An example of clergy are priests.
Origin of clergyMiddle English clergie, office or dignity of a clergyman from Old French from Ecclesiastical Late Latin clericus: see clerk
Origin of clergyMiddle English clergie from Old French ( from Vulgar Latin clercīa ) ( from Late Latin clēricus ; see clerk . ) and from Old French clergié body of clerks ( from Vulgar Latin clercātus ) ( from Late Latin clēricātus ) ( from clēricus clerk, cleric )
Attested in the 13th Century CE; from clergie, from Old French clergié (“learned men”), from Late Latin clericātus, from Latin clericus (“one ordained for religious services”), from Ancient Greek κληρικός (klērikos, “of the clergy”).