Vestibule is the Christian appropriation of the first part of the Hebrew tri-partite Temple area (gathering-preparation place, worshiper area, curtained-off priestly Holy of Holies).Nowadays it is the space between the entrance door into the church and the entrance door into the worship area proper. Catholics use it to shake off wet umbrellas and greet friends who happened to arrive at the same time. That area is employed by Christian Orthodox to purchase votive candles and spiritually prepare to enter into the dedicated worship space. In either case, ideally, it is serves as a special “liminal” space between leaving the secular ideals/values/ world and entering-ascending into a transcendent level. Sorry, I don’t know what that area is for Protestant Christians.
“Eureka!” (He then paints his own profile)