The labour pains begin with the First Seal:
Then I watched while the Lamb broke open the first of the seven seals, and I heard one of the four living creatures cry out in a voice like thunder, “Come forward.” I looked, and there was a white horse, and its rider had a bow. He was given a crown, and he rode forth victorious to further his victories. (6:1-2)
This Rider, according to Sacred Tradition, is the Lord Himself.
He is Jesus Christ. The inspired evangelist [St. John] not only saw the devastation brought about by sin, war, hunger and death; he also saw, in the first place, the victory of Christ.—POPE PIUS XII, Address, November 15, 1946; footnote of The Navarre Bible, “Revelation”, p.70
In the Haydock Catholic Bible Commentary (1859) following the Douay-Rheims Latin-English translation, it says:
A white horse, such as conquerors used to ride upon at a solemn triumph. This is commonly understood as our Saviour, Christ, who, by himself and by his apostles, preachers, martyrs, and other saints, triumphed over all the adversaries of His Church. He had a bow in his hand, the doctrine of the gospel, piercing like an arrow the hearts of the hearers; and the crown given him, was a token of the victory of him who went forth conquering, that he might conquer... The other horses that follow represent the judgments and punishment, that were to fall on the enemies of Christ and his Church...
In 1917 at Fatima, the three children saw an angel with a “flaming sword” about to strike the earth… but then our Blessed Mother appeared, and the light emanating from her (that is, her intercession) stopped the angel, who then cried out “Penance, penance, penance!” With that, the world entered into a definitive "time of mercy." St. Faustina writes several years later:
I saw the Lord Jesus, like a king in great majesty, looking down upon our earth with great severity; but because of His Mother’s intercession He prolonged the time of His mercy… [Jesus said:] I have eternity for punishing [these], and so I am prolonging the time of mercy for the sake of [sinners]. But woe to them if they do not recognize this time of My visitation... Let the greatest sinners place their trust in My Mercy… Write: before I come as a just Judge, I first open wide the door of My mercy. He who refuses to pass through the door of My mercy must pass through the door of My justice... —Divine Mercy in My Soul, Diary of St. Faustina, n. 1160, 1261, 1146
…hear the voice of the Spirit speaking to the whole Church of our time, which is the time of mercy. —POPE FRANCIS, Vatican City, March 6th, 2014, vatican.va
Hence, the most significant "victories" are those through the outpouring of Divine Mercy as the Lord seeks to gather as many souls as possible through the door of Mercy. Moreover, we have seen the spread of Marian devotion and Our Lady’s continued presence in her apparitions, the fruits of the Charismatic Renewal, which has been blessed by four popes, the birth of thousands of lay apostolates, the new apologetics movement led in large part by Mother Angelica’s world-wide EWTN, the powerful pontificate of John Paul II that gave us the Catechism of the Catholic Church, the “Theology of the Body” and, most notably, an army of young authentic witnesses through his World Youth Days.
The first seal being opened, [St. John] says that he saw a white horse, and a crowned horseman having a bow… He sent the Holy Spirit, whose words the preachers sent forth as arrows reaching to the human heart, that they might overcome unbelief. —St. Victorinus, Commentary on the Apocalypse, Ch. 6:1-2
However, in these “end times,” there is another notable revelation closely related to Divine Mercy that ties into St. John’s imagery of this rider wearing a crown (see The Divine Footnotes). And that is the message of the "gift of living in the Divine Will" —the "the crown and completion of all the other sanctities" — imparted by Jesus to Servant of God Luisa Piccarreta. As the Navarre Bible Commentary says of this rider upon the white horse:
The colour white is symbolic of belonging to the heavenly sphere and of having won victory with God's help. The crown he is given... would refer to the victory of good over evil; and the bow indicates the connection between this horse and the other three: these latter will be, as it were, arrows loosed from a distance to implement God's plans. —The Book of Revelation, p. 70
In other words, the victories of the Divine Mercy and Divine Will come from a long way off and are ultimately brought to fruition through the "labor pains" of the following seals. Jesus's revelations to Luisa also relate to the King and the coming of His "Kingdom of the Divine Will," which will reign “on earth as it is in heaven.” She frequently refers to the knowledge of the Divine Will as the "darts" and "arrows" of Christ, such as in this beautiful appeal for His reign to come:
O Holy Will, may your luminous rays unleash the arrows of your knowledge! Reveal to all your desire to come and make us happy—not with a purely human happiness, but with a divine one—to give us the self-mastery we once possessed, but that we had lost, and the interior light that reveals to us the true blessing we receive in possessing your Will, as it renders us stable and strong with a divine strength and stability, and the true evil that comes from rejecting it... Wherefore I beseech you to write through my hand all the knowledge you have revealed to me on your Divine Will. May every word, expression, effect and knowledge that derives from it, be to those who read, loving darts and arrows that, wounding them, may make them fall at your feet to receive you with open arms and allow you to reign in their hearts. —Servant of God Luisa Piccaretta from The Daughter's Appeal
Your game is to form loving arrows, darts and javelins and, with these, pierce their hearts, which causes You to rejoice. —from Divine Will Prayer Book, 24 Hours of the Passion, p. 325-326
However, for those who are unrepentant, God's darts of love become arrows of justice:
If one does not repent, God sharpens his sword, strings and readies the bow, prepares his deadly shafts, makes arrows blazing thunderbolts. (Psalm 7:13-14)
In that light, it is the Lord at the head of the Storm through the breaking of the First Seal, claiming ”victories” for the formation and preparation of a remnant to pass through to the other side of purification, as did Noah and his family.
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 
Jennifer
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