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The Crucifix, the body of Christ on the cross, is a key symbol in Catholicism.
The Roman Catholic Church traces its lineage to the male apostles who, according to Christian teaching, were chosen by Christ to continue his teaching. Research indicates that it is the world's largest Christian church, representing just over half of all Christians and one-sixth of the world's population.
The Christian Bible is the key holy book of the movement, which shares the principal beliefs of other traditions of Christianity.
The Catholic Church has a developed governance structure. The head of the Church is the Pope and Bishop of Rome. Clergy are called priests.