Machniak, Jan (Wydawnictwo Naukowe Papieskiej Akademii Teologicznej w Krakowie, 2015)
The devotion to Divine Mercy is one form of the cult of God with the proper object, which is God in the Mystery of the Holy Trinity. It is the part of the Christian piety directed to God Father, who revealed his Mercy in the death and resurrection of Jesus Christ. The new forms of the devotion to Divine Mercy proposed by Saint Sister Faustina contains the Feast of Divine Merci, celebrated on Mercy Sunday, the veneration of the image of Merciful Jesus and the Chaplet to Divine Mercy. John Paul II in the canonization of Sister Faustina proposed this devotion to the entire Church.
