The Nature of the Devotion Devotion to the Holy Heart of Mary is a special form of devotion to Mary . While the devotion is focused on the physical heart of Mary, the devotion extends beyond this to include all that the human heart of Mary symbolizes her: interior life, joys, sorrows, virtues, hidden perfections, virginal love for her God , maternal love for her Divine Son , and her motherly and compassionate love for her sinful and miserable children here below. The t wo parts of the devotion, the heart and her virtues are inseparable.