By Claire Chretien, LifeSiteNews - Bishop Athanasius Schneider explained in a talk in Rome this afternoon why Catholics as the "Church militant" — the souls fighting for Christ here on Earth — must combat the evils of today, including the evil of heresy within the Catholic Church… "The Christian duty to fight against the sin, the errors and the temptations of the world, includes also the fight against the errors inside the Church, i.e. the fight against heresy and ambiguity in doctrine," he added later.