Pentecostals Come Home to Rome — Eastern Rome, That Is. Through studying the Church Fathers, an Arizona pastor leads part of his congregation into Catholicism. TUCSON, Ariz. — The phrase “Swimming the Tiber” has been used to describe Protestants coming into the Catholic Church. But a group of Pentecostals in Arizona are coming “home to Rome” through Constantinople, leaving their Assembly of God church for the Byzantine Catholic Church.