There have been major “before” and “after” events in biblical history that have changed the course of human life on Earth. The first came with the fall, when the paradisaical garden of Eden faded into a world of struggle and shame. After many generations, the deluge washed away the Earth’s sin, leaving only one righteous family and pairs of animals to repopulate the land. Then the long-awaited and greatest of all events occurred, the Incarnation, markedly changing the course of mankind. God became human to save His people, and through His death and Resurrection, broke open the gates of heaven, giving to all who choose it a future even more glorious than the Eden they lost.
Today, another momentous change may be upon us in the near future, and the vast majority of people know nothing of it. This event has been given many titles by saints and holy people, including the Mother of God. They have called it the Warning, the Illumination of Conscience, the Illumination of All Souls, the Illumination of All Consciences, the Second Pentecost, the New Pentecost, the Minor Judgment, the Merciful Pre-judgment, and the Great Day of Light.
What is this event? It is a watershed moment in time when all light from the sun will be extinguished and a thick darkness will blanket the entire world. Then a brilliant light, much like two stars colliding, will appear in the sky, leaving behind it a sign of Jesus Christ, triumphant on the cross, visible to all in His glory. From the holes of the wounds in His body, bright rays will shine forth, lighting up the Earth—and at the same time, pierce every soul, illuminating everyone’s conscience. All will see their past sins and the consequences of those sins, whether or not they believe in the existence of God.
The Warning will be the greatest act of mercy for mankind since Jesus came to Earth. It will be both global and intimately personal. It will be a correction of conscience for a world gone astray. (Taken from the Introduction of the book: The Warning: Testimonies and Prophecies of the Illumination of Conscience.)
The Warning
The first five seals bring the Church and the world to a point of both preparation and anarchy. For the closer one gets to the eye of a hurricane, the more fierce and violent the winds become, until one reaches their climax at the eye wall.
The Sixth Seal:
Then I watched while he broke open the sixth seal, and there was a great earthquake; the sun turned as black as dark sackcloth and the whole moon became like blood. The stars in the sky fell to the earth like unripe figs shaken loose from the tree in a strong wind. Then the sky was divided like a torn scroll curling up, and every mountain and island was moved from its place. The kings of the earth, the nobles, the military officers, the rich, the powerful, and every slave and free person hid themselves in caves and among mountain crags. They cried out to the mountains and the rocks, “Fall on us and hide us from the face of the one who sits on the throne and from the wrath of the Lamb, because the great day of their wrath has come and who can withstand it?” (Rev 6:12-17)
The Sixth Seal is broken—a global earthquake, a Great Shaking occurs as the heavens are peeled back, and the judgment of God is perceived in everyone’s soul, whether kings or generals, rich or poor. What did they see that caused them to cry out to the mountains and rocks?
Fall on us and hide us from the face of him who is seated on the throne, and from the wrath of the Lamb; for the great day of their wrath has come, and who can stand before it? (Rev 6:15-17)
If you go back one chapter, you’ll find St. John’s description of this Lamb:
I saw a Lamb standing, as though it had been slain… (Rev 5:6)
That is, it is Christ crucified. This incredible sight accompanied by an interior light will cause the earth's inhabitants to collectively feel as if they have entered their own particular judgment (hence the sense of "wrath"). It’s a warning that the world has arrived at the threshold of the Day of the Lord.
Before I come as the just Judge, I am coming first as the King of Mercy. Before the Day of Justice arrives, there will be given to people a sign in the heavens of this sort: All light in the heavens will be extinguished, and there will be great darkness over the whole earth. Then the sign of the cross will be seen in the sky, and from the openings where the hands and the feet of the Savior were nailed will come forth great lights which will light up the earth for a period of time. This will take place shortly before the last day. —Jesus to St. Faustina, Diary of Divine Mercy, Diary, n. 83
Here it would be fitting to include the vision of the Warning by American seer Jennifer to whom Jesus allegedly said, “My child, you are the extension of My message of Divine Mercy":
The sky is dark and it seems as though it is night but my heart tells me it is sometime in the afternoon. I see the sky opening up and I can hear long, drawn out claps of thunder. When I look up I see Jesus bleeding on the cross and people are falling to their knees. Jesus then tells me, “They will see their soul as I see it.” I can see the wounds so clearly on Jesus and then He says, “They will see each wound they have added to My Most Sacred Heart.” To the left, I see the Blessed Mother weeping and then Jesus speaks to me again and says, “Prepare, prepare now for the time is soon approaching. My child, pray for the many souls who will perish because of their selfish and sinful ways.” As I look up, I see the drops of blood falling from Jesus and hitting the earth. I see millions of people from nations from all lands. Many seemed confused as they were looking up toward the sky. Jesus says, “They are in search of light for it should not be a time of darkness, yet it is the darkness of sin that covers this earth and the only light will be that of which I come with, for mankind does not realize the awakening that is about to be bestowed upon him. This will be the greatest purification since the beginning of creation."
Other prophets have foretold of the Warning. As early as the 1500s, St. Edmund Campion declared:
I pronounced a great day… wherein the terrible Judge should reveal all men’s consciences and try every man of each kind of religion. This is the day of change, this is the Great Day which I threatened, comfortable to the well-being, and terrible to all heretics. —Cobett’s Complete Collection of State Trials, Vol. I, p. 1063
His words were echoed in what Servant of God Maria Esperanza would later say:
The consciences of these beloved people must be violently shaken so that they may “put their house in order”… A great moment is approaching, a great day of light… it is the hour of decision for mankind. —Antichrist and the End Times, Fr. Joseph Iannuzzi, P. 37
It is the moment when many prodigal sons and daughters, seeing themselves up to their knees in the "pig-slop of sin," will have the opportunity to return to the Father's house and pass through the "door of mercy" before it begins to close. God the Father will give even the most hardened sinner the best opportunity possible to repent so that He kiss them, wrap His arms around them in love and clothe them in dignity.
For a short time after the Warning, Satan will be kept at bay so that people can make a completely free choice, unencumbered by temptation—a choice for or against God. It is a grace merited through the intercession of the Blessed Mother who, having united her own suffering to Christ's, brings to fulfillment St. Luke's prophecy:
...you yourself a sword will pierce so that the thoughts of many hearts may be revealed. (Luke 2:35)
St. Faustina Kowalska, and many other souls, have experienced such a personal illumination of their conscience—people who were suddenly swept into seeing a life review and the state of their souls against their will (see The Warning: Testimonies and Prophecies of the Illumination of Conscience). In her Diary, St. Faustina wrote:
Suddenly I saw the complete condition of my soul as God sees it. I could clearly see all that is displeasing to God. I did not know that even the smallest transgressions will have to be accounted for. What a moment! Who can describe it? To stand before the Thrice-Holy-God! —Divine Mercy in My Soul, Diary, n.36
As such, this collective, universal Illumination is an opportunity for individual souls, suddenly immersed in the light of truth, to either choose God and follow His Divine Will—or to reject it. Hence, immediately after the Warning, the final seal is broken...
Jennifer
Alicja Lenczewska
Elizabeth Kindelmann
Through what became The Spiritual Diary, Jesus and Mary taught Elizabeth, and they continue to instruct the faithful in the divine art of suffering for the salvation of souls. Tasks are assigned for each day of the week, which involve prayer, fasting, and night vigils, with beautiful promises attached to them, laced with special graces for priests and the souls in purgatory. In their messages, Jesus and Mary say that The Flame of Love of the Immaculate Heart of Mary is the greatest grace given to mankind since the Incarnation. And in the not-so-distant future, her flame will engulf the entire world.
Father Stefano Gobbi
Why Gisella Cardia?
Thirdly, the messages have frequently been accompanied by visible phenomena, photographic evidence found in In Cammino con Maria, which cannot be the fruit of subjective imagination, notably the presence of the stigmata on Giselle’s body and and the appearance of crosses or religious texts in blood on Gisella’s arms. See the pictures taken from her apparition website 
Why Manuela Strack?
Why the Visionaries of Our Lady of Medjugorje?
Why Pedro Regis?
Why the Servant of God Luisa Piccarreta?
of the saints. It wasn’t until she became a “Daughter of Mary” that the nightmares finally ceased at the age of eleven. In the following year, Jesus began to speak interiorly to her especially after receiving Holy Communion. When she was thirteen, He appeared to her in a vision that she witnessed from the balcony of her home. There, in the street below, she saw a crowd and armed soldiers leading three prisoners; she recognized Jesus as one of them. When He arrived beneath her balcony, He raised his head and cried out: “Soul, help Me!” Deeply moved, Luisa offered herself from that day on as a victim soul in expiation for the sins of mankind.
immobile, rigid-like state that appeared almost as if she were dead. It was only when a priest made the sign of the Cross over her body that Luisa regained her faculties. This remarkable mystical state persisted until her death in 1947—followed by a funeral that was no little affair. During that period in her life, she suffered no physical illness (until she succumbed to pneumonia at the end) and she never experienced bedsores, despite being confined to her little bed for sixty-four years.
Why Simona and Angela?
Valeria Copponi