Advent and Christmas are not the same thing. Culturally, we tend to flatten to two together into the “Christmas season,” but liturgically, Advent is its own special time, a time of waiting, a pregnant time. It is the time of year where we remember Mary and Joseph’s waiting and in that way are reminded that we are also a people who are waiting for Christ’s return. This is the message of Mark 13:24-37. Christ will return. There will be signs of it, so we must keep our watch. Advent reminds us how to do that.