Christ did not just say 'let him that has ears hear', He also said, 'let him that has eyes SEE'. What do we Christians have to show? Nothing much really, not so much in terms of our sacrificial Christ-like lives, not so much in terms of our symbols/arts either. We mostly spout out some hot air as the monk in Monty Python and the Holy Grail does when he preps to bless the 'holy grenade' which will kill a rabbit