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”).