St. Padre Pio told us that if we hope to completely defeat Islamism, secularism, Fɾҽҽmαsσɳɾყ and all other errors and evils, the support of Catholic Monarchies, especially the Royal Monarchs of France, will eventually be indispensable. We must pray, therefore, for the speedy coming of the promised French Monarch, and Holy Pope, who together will perfectly unite Church and State forever, and put an end once and for all to Islamist terrorism; as well as to atheistic secularism, and to all other errors, the Jєωs too, according to prophecy, will be converted in this time: http://marie-juliejahenny.blogspot.com/p/st-padre-pios-great-monarch-prophecy.html

The Main Prophesy below: this second site is only a modern theory of one person, though Ven. Father Holzhauzer is cited, and it may be wrong, but he speculates the Great Monarch will come in 2030, and the Holy Pope in 2038. " http://afterthewarningto2038.com/catholic-prophecy.php

At any rate, God grant both of them come soon! Now, onto St. Padre Pio's more credible and trustworthy prophesy and explanation below. What is really needed for all of us to do, as we celebrate Holy Week, is to remember we must become holier day by day, and seek deeper union with God in all that we do. Then, our merits will increase, our prayers will be more powerful, and God will answer.

UPDATE FEBRUARY 15, 2019:  I have just discovered it was Dr. Luigi Gaspari (1923-1995)from Bologna (Italy), a spiritual son and occasional secretary of St Padre Pio. St. Pio had chosen him when he was only 14 years old, by order of Jesus, to prepare him and to dispose him to be the instrument of the Grace of God.

Hi Forlorn. Grace be with you. Here is St. Benedict's centre (do keep them in your prayers; they are being persecuted, as good Michael Voris has docuмented in a video posted elsewhere) explain St. Paul's teaching that the Jєωs will one day be converted to Christ, and this will bring great graces to the whole world. Let us remember to pray and sacrifice for the intention that they do. The Saints and Doctors remind us that if we do all we can to obtain graces for one other single soul to be saved, our own souls too will then be saved!

"Saint Paul speaks much more clearly in the Epistle to the Romans. The whole eleventh chapter treats of the subject of the mystery of the election of the Gentiles and the falling away of the Jєωs. Saint Paul reminds the Romans that there were Jєωs who were faithful and accepted Christ. He also reminds them not to be complacent but to take a lesson from the rejection of the Jєωs, that if God would not spare the chosen people from His wrath, neither will he spare the Gentiles, should they fall into sin. He says, “For I would not have you ignorant, brethren, of this mystery (lest you should be wise in your own conceits) that blindness in part has happened in Israel, until the fullness of the Gentiles should come in” (Rom. 11:25) This has always been interpreted by Catholics to mean that there will be a general conversion of the Jєωιѕн nation.

An impressive list of Fathers can be brought out who refer to this future conversion as a fact. Included are Tertullian, Origen, Saint Hilary, Saint Ambrose, Saint John Chrysostom, Saint Jerome, Saint Cyril of Alexandria, Saint Prosper of Aquitaine, Saint Gregory the Great, Saint Isidore, Saint Bede the Venerable, and Saint Anselm. Saint Cyril of Alexandria says this: “Towards the end of time, Our Lord Jesus Christ will effect the reconciliation of His former persecutor Israel with Himself. Everybody who knows Holy Scripture is aware that, in the course of time, this people will return to the love of Christ by the submission of faith…. Yes, one day, after the conversion of the Gentiles, Israel will be converted, and the Jєωs will be astonished at the treasure they will find in Christ” (Commentary on Genesis, Bk. 5).

Another thought among the Fathers, and it is based on the eleventh chapter of Romans, is the idea that the zeal of the converted Jєωs will be the occasion of a restoration of the apostate Gentiles, who have despised the rule of Christ the King. Father Fahey speculates that the converted Jєωs will be heartbroken over their former opposition to Our Lord and His Church, and this contrition will fuel their charity to convert all men." From: https://catholicism.org/ad-rem-no-310.html

Ven. Father Bartholomew, "“When everything has been ruined by war; when Catholics are hard pressed by traitorous co-religionists and heretics; when the Church and her servants are denied their rights, the monarchies have been abolished and their rulers murdered… Then the Hand of Almighty God will work a marvelous change, something apparently impossible according to human understanding...“There will rise a valiant monarch anointed by God. He will be a Catholic, a descendant of Louis IX, yet a descendant of an ancient imperial German family, born in exile. He will rule supreme in temporal matters. The Pope will rule supreme in spiritual matters at the same time. Persecution will cease and justice shall rule. Religion seems to be suppressed, but by the changes of entire kingdoms it will be made more firm. “He will root out false doctrines and destroy the rule of Islam. His dominion will extend from the East to the West. All nations will adore God their Lord according to the Catholic teaching. There will be many wise and just men. The people will love justice, and peace will reign over the whole earth, for divine power will bind Satan for many years until the coming of the Son of Perdition ... “The Sixth Age of the Spirit commences with the powerful Monarch and the Holy Pontiff… and will last until the appearance of the Antichrist. This will be an age of consolation in which God will console His Spirit of the affliction and the great tribulation of the preceding age. All the nations will be united in the Catholic Faith. Men will seek the kingdom of God in all solicitude ... 

“For likewise, in this epoch, the people of Israel will be consoled to a very high degree by the Lord, our God ... Thus, in the Sixth Age, God will delight his Church with the greatest prosperity.
“For, although, in the Fifth Age, we saw everywhere the most deplorable calamities: whereas all is devastated by war; that the Church and its members are rendered tributaries; that the subjects are tormented and that all men conspire to erect republics: man himself will be so astonishingly changed by the hand of God, such that no one can imagine humanity. For the powerful monarch, who will come like an envoy of God, will destroy the republics thoroughly in climax; he will subdue all to his will and will employ his zeal in favor of the true Church of Christ. All the heresies will be relegated to hell. The empire of the Turks will be broken and this monarch will reign in the orient and in the occident. All the nations will come and adore the Lord their God in the true Catholic and Roman faith ...

Finally, the Sixth Church [in the book of the Apocalypse of St. John - Xavier], the Church of Philadelphia, is the type of this sixth age, for Philadelphia signifies friendship of brothers, and again guarding the heritage in union with the Lord. Now all these characters convene perfectly in the sixth age, in which they will have love, concord and perfect peace and in which the powerful Monarch will have to consider almost the entire world as his heritage. He will deliver up the earth, with the aid of the Lord his God from all his enemies, of ruin and of all evil ... “The Great Monarch will come when the Latin Church is desolated, humiliated, and afflicted with many heresies.” From: http://catholicprophecy.org/ven-barthalomew-holzhauser/

This is from a book published in Dublin in 1850, regarding prophecies.  This is a section on German prophecies and here notes Ven. Bartholomew Holzhausen.

On page 137 is where it picks up concerning his statements on the Apocalypse and our age of the Church -

 http://todayscatholicworld.com/bartholomew-holzhauser-catholic-prophecy-papacy.pdf