But it is not only the martyrs who share in his passion by their glorious courage; the same is true, by faith, of all who are reborn through baptism. That is why we are to celebrate the Lord’s paschal sacrifice with the unleavened bread of sincerity and truth. The leaven of our former malice is thrown out, and a new creature is filled and inebriated with the Lord himself. (Pope Saint Leo the Great, +461)