Not only Bishop Huibers and his successors, but also the Congregation for the Doctrine of the Faith occupied themselves with the events in Amsterdam.
The investigation and inquiry by the diocesan commissions were conducted over a period of years. In May of 1974, the Congregation sent a letter to the Bishop of Haarlem, the Most Reverend Zwartkruis, and published in the Osservatore Romano a notice of “non constat de supernaturalitate” which means that “the supernatural nature” is, at this point of time, “not determined”.
Twenty-two years later, in 1996, moved by many requests from home and abroad, Bishop Henrik Bomers of Amsterdam and his Auxiliary Bishop, Jozef M. Punt, decided after consulting with the Congregation, to officially allow the public veneration of Mary under the biblical title Lady of All Nations.
They did this through a decree which was published on May 31, 1996.
A few years later the bishop of Haarlem, Most Reverend Jozef Marianus Punt, ecclesiastically approved the apparitions of Amsterdam on May 31, 2002.
Here you find the most important documents:
May 31, 1996: Approbation of the Title
May 31, 2002: Approbation of the Apparitions
August 8, 2005: The Lady of all Nations… who once was Mary?
December 2006: Change by the Congregation for the Faith
September 2007: Notice regarding the “Army of Mary”
Originally from: Lady of All Nations Foundation (Holland)