On Christmas Day a small manger scene sat on a table just inside the doorway to a neatly kept home. People hurried past it all day, barely noticing the tiny figures gathered around the infant tucked into golden straw. In the morning children raced by it on their way to the Christmas tree. At noon, arriving guests pushed past it, one accidentally knocking over a shepherd as he took off his winter coat.

Later in the afternoon the well-fed assembly of adults and children moved somewhat slowly by the manger again as they drifted from the dining room back i…