Source: The Washington Post By Ruth Eglash Beside a nondescript stretch of highway linking Bethlehem to Jerusalem, there’s a large shiny rock and a cluster of olive trees. This place, called Kathisma or “seat” in Greek, is said to be where the Virgin Mary rested and drank from a well, not long before giving birth in a stable to Jesus. The only clue to that history is the ruins of a Byzantine church, with a vibrant mosaic floor peeking through mud and smashed beer bottles. And while the ruins themselves remain in the hands of the Greek Orthodox Church, all the…