Jesus has written about Heaven, Purgatory and Hell within His Holy messages through Saint Faustina and shown Saint Faustina and many other Saints Heaven Purgatory and Hell during their lives here. All Saints, Children and Adults have described similar accounts.
"...I saw two roads. One was broad, covered with sand and flowers, full of joy, music and all sorts of pleasures. People walked along it, dancing and enjoying themselves. They reached the end without realizing it. And at the end of the road there was a horrible precipice; that is, the abyss of hell. The souls fell blindly into it; as they walked, so they fell. And their number was so great that it was impossible to count them. And I saw the other road, or rather, a path, for it was narrow and strewn with thorns and rocks; and the people who walked along it had tears in their eyes, and all kinds of suffering befell them. Some fell down upon the rocks, but stood up immediately and went on. At the end of the road there was a magnificent garden filled with all sorts of happiness and all these souls entered there. At the very first instant they forgot all their sufferings" (Diary 153).
"...How fleeting all earthly things are, and everything that appears great disappears like smoke, and does not give the soul freedom, but weariness. Happy the soul that understands these things and with only one foot touches the earth" (Diary 1141).
"...If a soul loves God sincerely and is intimately united with Him, then, even though such a soul may be living in the midst of difficult external circumstances, nothing can disturb its interior life; and in the midst of corruption, it can remain pure and unsullied; because the great love of God gives it strength for battle, and God also protects in a special way" (Diary 1094).
"As the soul continues to immerse itself more deeply into the abyss of its nothingness and need, God uses His omnipotence to exalt it. If there is a truly happy soul upon earth, it can only be a truly humble soul. At first, ones self-love suffers greatly on this account, but after a soul has struggled courageously, God grants it much light by which it sees how wretched and full of deception everything is" (Diary 593).
Heaven (extract):
"The floodgates of heaven are open to a humble soul, and a sea of graces flows down upon it (...). God refuses nothing to such a soul; it is all-powerful and influences the destiny of the whole world. God raises such a soul up to very throne, and the more it humbles itself, the more God stoops down to it, pursuing it with His graces and accompanying it at every moment with His omnipotence" (Diary 1306).
"...I was in heaven and I saw its inconceivable beauties and the happiness that awaits us after death. I saw how all creatures give ceaseless praise and glory to God. I saw how great is happiness in God, which spreads to all creatures, making them happy; and than all the glory and praise which springs from this happiness returns to its source; and they enter into the depths of God, contemplating the inner life of God (...). This source of happiness is unchanging in its essence, but it is always new, gushing forth happiness for all creatures" (Diary 777).
"God, who is Light itself, lives in a pure and humble heart, and all sufferings and adversities serve but to reveal the souls holiness" (Diary 573).
Hell (extract):
"I was led by an Angel to the chasms of hell (...). I would have died at the very sight of these tortures if the omnipotence of God had not supported me. Let the sinner know that he will be tortured throughout all eternity, in those senses which he made use of to sin. I am writing this at the command of God, so that no soul may find an excuse by saying there is no hell, or that nobody has ever been there, and so no one can say what it is like (...). I noticed that there are most souls that did not believe hell exists. I could hardly recover from the fright. How terribly souls suffer there!" (Diary 741).
Purgatory (extract):
"In a moment I was in a misty place full of fire in which there was a great crowd of suffering souls. They were praying fervently, but to no avail for themselves; only we can come to their aid (...) their greatest torment was longing for God. I saw Our Lady visiting the souls in Purgatory. The souls call her "The Star of the Sea". She brings them refreshment" (Diary 20).
Humility (extract):
"...Humility is nothing but the truth. There is no cringing in the true humility. Although I consider myself the least (...). I enjoy the honor of being the beloved of Christ" (Diary 1502).
"As the soul continues to immerse itself more deeply into the abyss of its nothingness and need, God uses His omnipotence to exalt it. If there is a truly happy soul upon earth, it can only be a truly humble soul. At first, ones self-love suffers greatly on this account, but after a soul has struggled courageously, God grants it much light by which it sees how wretched and full of deception everything is" (Diary 593).
"The floodgates of heaven are open to a humble soul, and a sea of graces flows down upon it (...). God refuses nothing to such a soul; it is all-powerful and influences the destiny of the whole world. God raises such a soul up to very throne, and the more it humbles itself, the more God stoops down to it, pursuing it with His graces and accompanying it at every moment with His omnipotence" (Diary 1306).
"God, who is Light itself, lives in a pure and humble heart, and all sufferings and adversities serve but to reveal the souls holiness" (Diary 573).
"...Humility is nothing but the truth. There is no cringing in the true humility. Although I consider myself the least (...). I enjoy the honor of being the beloved of Christ" (Diary 1502).
"Outwardly, your sacrifice must look like this: silent, hidden, permeated with love, imbued with prayer. I demand, My daughter, that your sacrifice be pure and full of humility, that I may find pleasure in it (...). You shall accept all sufferings with love.
Do not be afflicted if your heart often experiences repugnance and dislike for sacrifice. All its power rests in the will, and so these contrary feelings, far from lowering the value of the sacrifice in My eyes, will enhance it" (Diary 1767).
"...every conversion of a sinful soul demands sacrifice" (Diary 961).
"...I need sacrifice lovingly accomplished, because that alone has meaning for Me. Enormous indeed are the debts of the world which are due to Me; pure souls can pay them by their sacrifice, exercising mercy in spirit" (Diary 1316).
"...but write this for the many souls who are often worried because they do not have the material means with which to carry out an act of mercy. Yet spiritual mercy, which requires neither permissions nor storehouses, is much more meritorious and is within the grasp of every soul. If a soul does not exercise mercy somehow or other, it will not obtain My mercy on the day of judgment. Oh, if only souls knew how to gather eternal treasure for themselves, they would not be judged, for they would forestall My judgment with their mercy" (Diary 1317).
"Chosen souls are, in My hand, lights which I cast into the darkness of the world and with which I illumine it. As stars illumine the night, so chosen souls illumine the earth. And the more perfect a soul is, the stronger and the more far-reaching is the light shed by it. It can be hidden and unknown, even to those closest to it, and yet its holiness is reflected in souls even to the most distant extremities of the world" (Diary 1601).
"...There are souls living in the world who love Me dearly. I dwell in their hearts with delight. But they are few. In convents too, there are souls that fill My Heart with joy. They bear My features (...). Their number is very small. They are a defense for the world before the justice of the Heavenly Father and a means of obtaining mercy for the world. The love and sacrifice of these souls sustain the world in existence" (Diary 367).
"The Lord gave me much light to know His attributes. The first attribute that the Lord gave me to know is His holiness. His holiness is so great that all the Powers and Virtues tremble before Him(...). The holiness of God is poured out upon the Church of God and upon every living soul in it, but not in the same degree. There are souls who are completely penetrated by God, and there are those who are barely alive. The second kind of knowledge that the Lord granted me concerns His justice. His justice is so great and penetrating that it reaches deep into the heart of things, and all things stand before Him in naked truth (...). The third attribute is love and mercy. And I understood that the greatest attribute is love and mercy. It unites the creature with the Creator. This immense love and abyss of mercy are made known in the Incarnation of the Word and in the Redemption [of humanity], and it is here that I saw this as the greatest of all Gods attributes" (Diary 180).
"All that is great and beautiful is in God (...). O you sages of the world and you great minds, recognize that true greatness is in loving God!" (Diary 990).
"God approaches a soul in a special way known only to himself and to the soul (...). Love presides in this union, and everything is achieved by love alone. Jesus gives himself to the soul in a gentle and sweet manner, and in His depths there is peace. He grants the soul many graces and makes it capable of sharing His eternal thoughts. And frequently, He reveals to it His divine plans" (Diary 622).
"...If the Lord demands something of a soul, He gives it the means to carry it out, and through grace He makes it capable of doing this. So, even if the soul be utterly miserable, at the Lords command it can undertake things beyond its expectation, because this is the sign by which it can be known that the Lord is with that soul; if Gods power and strength, which make the soul courageous and valiant, is manifested within it" (Diary 1090).
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Confession to our Lord Jesus Christ is one of the ways in which my soul is humbled with Father present, opening up my heart in genuine remorse of sins to Jesus as is repenting along the way to Jesus prior to Prayer from my heart, not just from my mind and wonderful lessons in Humility getting more used to being humble. I pray for Jesus and The Blessed Virgin Mary's humility along the way, offering up humiliating experiences for the benefit of The Holy Souls in Purgatory and own soul; sometimes failing in this most sadly.
By focussing on Jesus daily, His Life, His torments, pain, sorrows, humiliating experiences, Jesus is able to open our hearts more powerfully which in turn among many other fantastic things, makes us more humble, more loving, compassionate and merciful to others, because we are receiving Jesus/God/The Holy Spirit Himself with all of His most Loving Holy attributes.
Fasting if healthy thrice weekly assists wonderfully.
Love and kindest wishes your Sister in Jesus Christ our Saviour