SPIRITUAL DISCERNMENT
From the Catechism of the Catholic Church:
66 "The Christian economy, therefore, since it is the new and definitive Covenant, will never pass away; and no new public revelation is to be expected before the glorious manifestation of our Lord Jesus Christ." Yet even if Revelation is already complete, it has not been made completely explicit; it remains for Christian faith gradually to grasp its full significance over the course of the centuries.
67 Throughout the ages, there have been so-called "private" revelations, some of which have been recognized by the authority of the Church. They do not belong, however, to the deposit of faith. It is not their role to improve or complete Christ's definitive Revelation, but to help live more fully by it in a certain period of history. Guided by the Magisterium of the Church, the sensus fidelium knows how to discern and welcome in these revelations whatever constitutes an authentic call of Christ or his saints to the Church.
Christian faith cannot accept "revelations" that claim to surpass or correct the Revelation of which Christ is the fulfillment, as is the case in certain non-Christian religions and also in certain recent sects which base themselves on such "revelations."
Responsibility of the Faithful.
Today there are a myriad of alleged private revelations and apparitions vying for the attention of the faithful. None have been definitively judged by the Holy See, some have been approved by local authority (e.g. Akita, Cuapa, Betania), others have been found lacking in supernaturality (e.g. Medjugorje, Garabandal), some few have been condemned (e.g. Necedah, Bayside) and finally, the vast majority have received no attention from Church authorities whatsoever.
The first responsibility of the faithful is to remain firmly established in the faith, in the sacraments and in communion with the Pope and bishops. Any Catholic who gives their primary attention to alleged private revelation at the expense of Sacred Scripture, the teaching of the Church (especially the Catechism), sacramental practice, prayer and fidelity to Church authority is off course. The running after spiritual phenomena, such as alleged revelations, is condemned by St. John of the Cross as spiritual avarice. This means that pious souls who would be repulsed by crude materialistic greed think nothing of being greedy to know revelations and prophecies. An exclusive, or even a predominant attention to these matters (especially apocalyptic ones), cannot help but produce an unbalanced spirituality. Should the Church condemn some favorite alleged revelation such a person may find themselves believing more in it than in the supernatural authority of the Church. The devil will have succeeded in what he had set out to do.
The second responsibility is to have regard, in the first place, for those private revelations and apparitions approved by the Church. Within a balanced practice of the faith the edifying content of approved private revelations can be a motive for deeper piety and fidelity to the Gospel. God has chosen to give guidance to the Church in particular eras in this way and we would, as I noted above, be imprudent to disregard altogether what are credibly His prophetic interventions in the life of His Church.
Finally, there are many other private revelations that have not received Church approval. The Second Vatican Council urges us to discern the Spirit in the case of such extraordinary graces [Lumen gentium 12], which means being neither gullible or incredulous, but subjecting them to all relevant theological and human tests of credibility. Clearly, in this the judgment of the local bishop is the key element of such a discernment as I noted above. Often enough, unfortunately, the laity are left to make this determination themselves, relying on the testimony of the events, the judgment of holy and orthodox priests and common sense. It must always be kept in mind that however credible and reasonable such revelations seem to be, God would never ask one to separate oneself from the faith and discipline of the Church to follow it. Apparitions/Private Revelations

