This study presents the Tondo Doni to the new Florentine republic as a model of the 'great sacrament' of marriage from the New Testament book of Ephesians. Following fifteenth-century theology, Michelangelo portrayed Mary as a humble wife dominated and possessed by a virile guardian Joseph, the couple united as if 'two in one flesh'. To compensate for their symbolic propinquity, the painter cast her as a paragon of virginity, a muscular mulier fortis. In order to keep this virago in her place, Michelangelo coupled the Virgin in spiritual union with Christ, maenad-Psyche to bacchic...