in 2006. The, catholic Church, also known as the, roman Catholic Church, is the largest Christian church, with approximately.3 billion baptised. Germanic invaders of Roman territory in the 5th and 6th centuries, many of whom had previously adopted Arian Christianity, eventually adopted Catholicism to ally themselves with the papacy and the monasteries. 42 Although the conclave may elect any male Catholic as pope, since 1389 only cardinals have been elected. If a person is gay and seeks the Lord and has good will, well who am I to judge them? Second Vatican Council, Dogmatic Constitution on the Church Lumen gentium, 23) Colin Gunton.