Until 6th century, ram's head was used to represent Jesus. But, cross was sacred among many pagan beliefs from Spain to India. So, the Christians started to use cross to attract more Pagan. They did the same thing with Christmas, Easter and every other Christian ritual. Abrahamic religions are not religion; they are business organization where they charge you but sell you nothing. At least, in Pagan rituals, there is music, festivals and carnivals. But, there is no room for entertainment in Abrahamic fascist ideologies unless you are a rapist :3