80 More recently, Saint John Paul II presented the growth of this devotion in recent centuries as a response to the rise of rigorist and disembodied forms of spirituality that neglected the richness of the Lord’s mercy. At the same time, he saw it as a timely summons to resist attempts to create a world that leaves no room for God. “Devotion to the Sacred Heart, as it developed in Europe two centuries ago, under the impulse of the mystical experiences of Saint Margaret Mary Alacoque, was a response to Jansenist rigor, which ended up disregarding God’s infinite mercy... The men and women of the third millennium need the heart of Christ in order to know God and to know themselves; they need it to build the civilization of love”.
Source: Dilexit Nos (Vatican.va)