Catholicism is the biggest group of Christianity. All Catholics are Christians, however not all Christians are Catholics. A Christian alludes to a supporter of Jesus Christ who might be a Catholic, Protestant, Gnostic, Mormon, Evangelical, Anglican or Orthodox, or devotee of another part of the religion.So too Cyril of Jerusalem, in the fourth century, says that the Church is called Catholic not just 'in light of the fact that it is spread all through the world', yet additionally 'on the grounds that it instructs totally and without imperfection every one of the regulations which should go to the information of men'
