The ecclesiological primacy of the Divine Mercy in the theological conception of card. W. Kasper constitutes an important implication in times of the current post–synodical discussions in which—unfortunately—the German cardinal is too hastily accused of liberalism that, as some claim, might waver the Tradition and the discipline of the sacraments. However, every objective theologian, on the onset of their criticism of the theological propositions of card. Kasper, ought to read his outstandingly important thesis which constitutes the core of the theology of the Divine Mercy. Essential evangelical arguments have been articulated in the discussions of the Synod of Bishops on the Family (Rome, 5 –19.10.2014). These arguments shed light on the primacy of the Divine Mercy as well as on the established ecclesiastic practice alongside with its painful consequences in the life of the Church family. What card. Kasper means is not the introduction of liberal changes but a diligent study of the evangelical message of God’s Mercy that the Church in our times should conduct. In the context of this teaching W. Kasper perceives problems with which certain people within the Church are afflicted, and with which the contemporary Church seems unable to deal.