Please elaborate and post the writings of Pius XII and John XXIII on this matter.
Vladimir, I've known about this for so long my sources of info are long forgotten. I did find this to get you started.
http://www.traditio.com/tradlib/faq11.txtDIVINE MERCY
A local devotion under this title, which is associated with one Sr.
Faustina and a chaplet of the Divine Mercy, was approved by the Ordinary of
Vilnius, Poland, in 1936 and from there spread rapidly, especially after
World War II in the United States.
It appears that Sr. Faustina could not write, except for a few lines
phonetically. Most of her "diary" was concocted by her sisters after her
death. Because of the incongruities of the dairy (different handwriting,
different use of terms), the devotion was suppressed, and the book of her
diary was placed on the Index Librorum Prohibitorum [Index of Forbidden
Books]. This decision was upheld by Pope John XXIII in 1958/59.
In early 1978, a Polish cardinal petitioned the Vatican to remove the
suppression of the devotion, which was being practiced without sanction in
his diocese, and the Vatican replied in the negative, confirming the
suppression. By this time the original devotional prayer that Sister
Faustina composed in 1935 had been illegally replaced by an oecuмenized
version framed in New Order terminology -- with substantially changed prayers
to promote non-Catholic beliefs and the heresy of universal salvation. Among
other things, it omitted Sister Faustina's quotation of Our Lord's words
condemning "pagans, heretics, and schismatics." Later in 1978 a Polish pope
was elected, and the now modernized version, twice condemned, was now entered
onto the Novus Ordo liturgical calendar on the Octave of Easter. The "Feast
of Divine Mercy" is strictly Novus Ordo and has no basis in the traditional
liturgy.
The Octave Day of a feast, particularly of the greatest feast,
Easter, is a significant day in itself. The Divine Mercy cult is thus in
contravention of the focus of the Catholic liturgy for that day,
which is on the Resurrection of Our Lord and faith in His Divinity. As Dom
Gueranger, the noted Benedictine liturgical scholar, commented in his
fifteen-volume Liturgical Year: "Such is the solemnity of this Sunday that
not only is it of greater double rite, but no feast, however great, can ever
be kept upon it." That is the Roman Catholic attitude, which the New Order
spurned.
Not surprisingly, the cult in post-Conciliar times is increasing in
its association with another cult, that is, the cult of "Catholic"
Charismaticism. This Charismatic Movement is far from true Catholicism, but
is a derivative of the Protestant heresy, based on the erroneous notion that
emotional experience always accompanies the conferral of grace, whereas the
Catholic doctrine is that the only sensible indication of the conferral of
grace is the Sacrament itself. Perhaps the cult's association with New Age
ideas is why it has become lionized in recent years, whereas popes up to JPII
have condemned it.
Is it any wonder that the New Order pushes this corrupted devotion
over the traditional devotion to the Most Sacred Heart of Jesus? The
devotion to the Most Sacred Heart of Jesus is a much more ancient devotion,
having grown in the early Middle Ages through the efforts of St. Bernard of
Clairvaux, a Doctor of the Church, and St. Gertrude. However, it was in the
latter half of the seventeenth century that news of three private revelations
to St. Margaret Mary Alocoque concerning the Sacred Heart swept the Catholic
world and shortly led to the establishment of a feast on the Friday after the
Octave of Corpus Christi (the Friday after the Second Sunday after
Pentecost).
The Feast of the Most Sacred Heart of Jesus, which was extended to
the Universal Church by Pope Pius IX in 1856, became a feast of atonement for
human ingratitude toward God in spite of the supreme sacrifice of Calvary.
The theme for the new Mass and the Divine Office was taken from the words of
Our Lord to St. Margaret Mary: "Behold the Heart which has loved men so
greatly, but which has been given so little love in return."
Devotion to the Most Sacred Heart of Jesus has been richly
indulgenced by the Church, and a Litany of the Most Sacred Heart of Jesus is
one of only five approved for public recitation. Given the apparent New
Order's corruption of the original devotion to the divine mercy and the
pushing of this Charismatic novelty condemned by two popes, traditional
Catholics will continue to stand with the more ancient and universally-
approved devotion to the Most Sacred Heart of Jesus and reject this New Order
novelty.