From his writings titled `ASCENT OF MT. CARMEL'

"if certain things be told us supernaturally, whether at our desire or no, we must receive only that which is in clear conformity with reason and Gospel law. And then we must receive it, not because it is revelation, but because it is reason, and not allow ourselves to be influenced by the fact that it has been revealed. Indeed, it is well in such a case to look at that reason and examine it very much more closely than if there had been no revelation concerning it; inasmuch as the devil utters many things that are true, and that will come to pass, and that are in conformity with reason, in order that he may deceive."

"7. It is not fitting, then, to enquire of God by supernatural means, nor is it necessary that He should answer; since all the faith has been given us in Christ, and there is therefore no more of it to be revealed, nor will there ever be. And he that now desires to receive anything in a supernatural manner, as we have said, is, as it were, finding fault with God for not having given us a complete sufficiency in His Son. For, although such a person may be assuming the faith, and believing it, nevertheless he is showing a curiosity which belongs to faithlessness. We must not expect, then, to receive instruction, or aught else, in a supernatural manner. For, at the moment when Christ gave up the ghost upon the Cross, saying, Consummatum est, which signifies, 'It is finished,' an end was made, not only of all these forms, but also of all those other ceremonies and rites of the Old Law. And so we must now be guided in all things by the law of Christ made man, and by that of His Church, and of His ministers, in a human and a visible manner, and by these means we must remedy our spiritual weaknesses and ignorances, since in these means we shall find abundant medicine for them all. If we leave this path, we are guilty not only of curiosity, but of great audacity: nothing is to be believed in a supernatural way, save only that which is the teaching of Christ made man, as I say, and of His ministers, who are men. So much so that Saint Paul says these words: Quod si Angelus de coelo evengelizaverit, praterquam quod evangelizavimus vobis, anathema sit.⁴⁰⁷ That is to say: If any angel from Heaven preach any other gospel unto you than that which we men preach unto you, let him be accursed and excommunicate."

" But now that the faith is founded in Christ, and in this era of grace, the law of the Gospel has been made manifest, there is no reason to enquire of Him in that manner, nor for Him to speak or to answer as He did then. For, in giving us, as He did, His Son, which is His Word -- and He has no other -- He spake to us all together, once and for all, in this single Word, and He has no occasion to speak further".

2. As to these revelations which are included under our second head, God grants them still in our time to whom He will. He is wont, for example, to reveal to some persons how many days they still have to live, or what trials they are to suffer, or what is to befall such and such a person, or such and such a kingdom, etc. And even as regards the mysteries of our faith, He will reveal and expound to the spirit the truths concerning them, although, since this has already been revealed once, it is not properly to be termed revelation, but is more correctly a manifestation or explanation of what has been revealed already.

3. In this kind of revelation the devil may meddle freely. For, as revelations of this nature come ordinarily through words, figures and similitudes, etc., the devil may very readily counterfeit others like them, much more so than when the revelations are in spirit alone. Wherefore, if with regard to the first and the second kind of revelation which we are here describing, as touching our faith, there be revealed to us anything new, or different, we must in no wise give our consent to it, even though we had evidence that it was spoken by an angel from Heaven. For even so says Saint Paul, in these words: Licet nos, gut Angelus de coelo evangelizet vobis praeterquam quod evangelizavimus vobis, anathema sit.⁴⁵² Which signifies: Even though an angel from Heaven declare or preach unto you aught else than that which we have preached unto you, let him be anathema.

4. Since, then, there are no more articles to be revealed concerning the substance of our faith than those which have already been revealed to the Church, not only must anything new which may be revealed to the soul concerning this be rejected, but it behoves the soul to be cautious and pay no heed to any novelties implied therein, and for the sake of the purity of the soul it behoves it to rely on faith alone. Even though the truths already revealed to it be revealed again, it will believe them, not because they are now revealed anew, but because they have already been sufficiently revealed to the Church: indeed, it must close its understanding to them, holding simply to the doctrine of the Church and to its faith, which, as Saint Paul says, enters through hearing. And let not its credence and intellectual assent be given to these matters of the faith which have been revealed anew, however fitting and true they may seem to it, if it desire not to be deceived. For, in order to deceive the soul and to instil falsehoods into it, the devil first feeds it with truths and things that are probable in order to give it assurance and afterwards to deceive it. He resembles one that sews leather with a bristle, first piercing the leather with the sharp bristle, after which enters the soft thread; the thread could not enter unless the bristle guided it.

5. And let this be considered carefully; for, even were it true that there was no peril in such deception, yet it greatly behoves the soul not to desire to understand clearly things that have respect to the faith, so that it may preserve the merit of faith, in its purity and entirety, and likewise that it may come, in this night of the understanding, to the Divine light of Divine union. And it is equally necessary to consider any new revelation with ones eyes closed, and holding fast the prophecies of old, for the Apostle Saint Peter, though he had seen the glory of the Son of God after some manner on Mount Tabor, wrote, in his canonical epistle, these words: Et habemus firmiorem propheticum sermonem; cui bene factitis attendentes, etc.⁴⁵⁴ Which is as though he had said: Although the vision that we have seen of Christ on the Mount is true, the word of the prophecy that is revealed to us is firmer and surer, and, if ye rest your soul upon it, ye do well.

6. And if it is true that, for the reasons already described, it behoves the soul to close its eyes to the aforementioned revelations which come to it, and which concern the propositions of the faith, how much more necessary will it be neither to receive nor to give credit to other revelations relating to different things, wherein the devil habitually meddles so freely that I believe it impossible for a man not to be deceived in many of them unless he strive to reject them, such an appearance of truth and security does the devil give them? For he brings together so many appearances and probabilities, in order that they may be believed, and plants them so firmly in the sense and the imagination, that it seems to the person affected that what he says will certainly happen; and in such a way does he cause the soul to grasp and hold them, that, if it have not humility, it will hardly be persuaded to reject them and made to believe the contrary. Wherefore, the soul that is pure, cautious, simple and humble must resist revelations and other visions with as much effort and care as though they were very perilous temptations. For there is no need to desire them; on the contrary, there is need not too desire them, if we are to reach the union of love. It is this that Solomon meant when he said: 'What need has a man to desire and seek things that are above his natural capacity?' As though we were to say: He has no necessity, in order to be perfect, to desire supernatural things by supernatural means, which are above his capacity.

For more on private revelation please order the booklet below.

  Private Revelation