"It is hard to overstate the importance of relics in the religious cults of the Middle Ages. When Luther pinned his 95 theses to the door of Wittenberg’s Castle Church on All Saints’ Eve 1517, more than five thousand relics, Almond tells us, were on display inside: 56 of the Virgin Mary and only two fewer of Mary Magdalene."
https://www.lrb.co.uk/the-paper/v46/n04/marina-warner/multiplying-marys