It wasn’t a coincidence. When Martin Luther decided to nail his Ninety-Five Theses to the door of Wittenburg Castle Church, he chose Halloween to do it. This Augustinian monk held fiercely to many grievous doctrinal errors, but he did understand one thing: the liturgical year of the Catholic Church. The liturgical year is meant to do two things at once: through it, we cast our eyes back towards Christ’s life on earth and through it we simultaneously cast our eyes forward through the long history of mankind, a history which will be crowned in the Parousia, the Second Coming of...