Last year, both Father James Martin and papal biographer Austen Ivereigh took the occasion of the feast to tweet about immigration. Using the Holy Family’s Flight into Egypt as their hook, they tried to refocus the feast to the plight of refugees. There’s a grain of truth to that argument: the Holy Family had to live in Egypt for a time. But that’s not what is central to this feast, and what is central to this feast is what made them live in Egypt.