Christ has appeared . . . to take away sin by his sacrifice.  Why did Jesus have to suffer and die for us?   Couldn’t God have saved us without such a heavy sacrifice? Many have asked that question over the centuries, including St. Thomas Aquinas, whose feast was earlier this week.   A Doctor of the Church, Aquinas revolutionized the Church’s understanding of its teaching.   His works are still studied in seminaries around the world.   He is...