Saint Margaret Mary Alacoque

…French Jesuit priest who assisted St. Margaret Mary Alacoque in establishing the devotion to the Sacred Heart. He was her confessor, and his writings and testimony helped to validate her mystical visions and elevated the Sacred Heart as an important feature of Roman Catholic devotion.

…to a French Visitandine nun, St. Margaret Mary Alacoque, in the late 17th century. Assisted by Claude de la Colombière, her confessor, she called for the establishment of a feast in honor of the Sacred Heart and for prayers of reparation for sins, especially for those directed against the Eucharist.…