friends, who call themselves the god squad. both paths invite us to forget about our differences and learn more about how we have similarities to each other. reporter: bethlehem where the gospels state jesus was born, more than three centuries later the roman emperor, constantine, converted to christianity. he built the original church on the site, above a cave, once a cattle stall where tradition held that mary placed her newborn baby in a manger. but, do we know this spot, now wrapped with marble and smelling over incense is the actual place of jesus birth? we have no artifacts associated with jesus himself. reporter: classical archaeologist jody magnus from the university of north carolina at chapel hill. many events described in the new testament are impossible to verify because they are events.