grandiloquent
overblown
pompous
pontifical
portentous
puffed up with vanity
a grandiloquent and boastful manner
overblown oratory
a pompous speech
pseudo-scientific gobbledygook and pontifical hooey
Newsweek
episcopal
denoting or governed by or relating to a bishop or bishops
papal
apostolic
apostolical
proceeding from or ordered by or subject to a pope or the papacy regarded as the successor of the Apostles
papal dispensation
the vestments and other insignia of a pontiff (especially a bishop)