Shop our selection of Mary, Our Lady Undoer of Knots products. Pope Francis is well known in Argentina and Brazil for promoting devotion to Our Lady Undoer of Knots which has been a source of healing and grace for countless families. The devotion to Mary Undoer of Knots (also known as Mary Untier of Knots) is becoming more and more known in many different countries. Saint Irenaeus made a comparison between Eve and Mary, saying, "Eve, by her disobedience, tied the knot of disgrace for the human race; whereas Mary, by her obedience, undid it". The modern representation of Mary undoing the knots of sin and disobedience is a painting dating to 17th century Germany.