Saint Faustina (1905–1938): vocation, mission and trust
A short and bright life
Saint Sister Faustina, born Helena Kowalska on August 25, 1905, in Głogowiec, Poland, is one of those souls who, in a few years, left a lasting spiritual imprint on the universal Church. Entering the convent of the Sisters of Divine Mercy at a young age, she lived a seemingly ordinary life—work, prayer, obedience—but transformed by intense mystical experiences and by a clear call from Christ to become the messenger of his mercy for the whole world. Her life, cut short prematurely in 1938 at the age of 33, offered itself as a testimony of unwavering trust: “Jesus, I trust in You,” the formula that remains the heart of her spirituality.
A mission received and assumed
Faustina did not seek visibility. She was initially obedient to her congregation, performing modest tasks. But the Lord gradually entrusted her with specific revelations: to pray for sinners, promote the Feast of Divine Mercy, encourage frequent confessions, and have the image of the Merciful Christ painted as she saw it. In her Diary, she records many intimate conversations with Jesus, who told her, among other things, "I am sending you to all humanity with my mercy" (Diary, 570). This sending transformed her gentleness into pastoral action—prayers, offering Masses, spiritual direction when she was able.
Historical context: Poland and the Church between the two wars
A nation in reconstruction
Interwar Poland, newly independent since 1918 after more than a century of partition, was seeking to rebuild itself politically, socially, and culturally. Social tensions were high: rural poverty, uneven industrialization, multiple political movements, and the memory of recent conflicts. Polish society remained deeply marked by the Catholic faith, with the Church playing a central role in public and private life. It is in this context of fragile national hope and religious concern that Faustina's mission unfolds.
The Catholic Church and the Search for Signs of Hope
After the Great War and the rise of totalitarian ideologies in Europe, the Church often offered spiritual responses to collective anxieties: encouraging prayer, popular devotions, promoting contemporary saints, and strengthening catechesis. Private revelations, when deemed trustworthy, offered points of consolation and spiritual renewal. Faustina's devotion to mercy resonated particularly strongly: proposing a vision of God as a compassionate Father stood in stark contrast to the ideologies of hatred and violence that were then on the rise.

The Inner Path: Mysticism, Suffering, and Obedience
Inner trials and persecution
Faustina's mystical experiences were not without suffering. She experienced periods of abandonment, moral violence, and humiliation, sometimes inflicted by sisters in her community who deemed her "extravagant" or "hysterical." These trials, far from diminishing her faith, served as a crucible. The Diary testifies to these moments: "Satan always takes advantage of such moments... how can one be sincere when one is misunderstood?" (Diary, 1266). Faced with discouragement, Faustina heard the voice of Christ: "Do not be afraid, I am with you" (Diary, 1588), a word that became the framework of her existence.
Union with the Passion and Offertory of Suffering
One of the profound dimensions of her spirituality is union with the Passion of Christ. The Lord told her: “When it seems to you that your sufferings are beyond your strength, look at my wounds. Meditation on my Passion will help you rise above everything. I need your sufferings to save souls” (Diary, 562). Faustina did not seek pain for itself, but saw it as a means of mercy for others, an offering that cooperated with Christ’s redemptive plan.
The Revelations: Image, Prayer and Feast of Divine Mercy
The image of the Merciful Christ
At the heart of Faustina's message is the image of Christ as she glimpsed him: Jesus raising his right hand in blessing, the other hand pointing to his heart from which flow two great rays—one pale, the other red—symbolizing the water and blood that flowed from Christ's side (cf. Jn 19:34). Jesus asked her to have this icon painted with the inscription "Jesus, I trust in You." Faustina understood that these rays represented the grace and mercy offered to humanity (Diary, 299).
The Prayer of Mercy and Devotion
Beyond the image, Faustina received practical guidance: the importance of the sacrament of reconciliation, the celebration of a holy hour, the recitation of the prayer for Divine Mercy—especially the prayer known as the Chaplet of Mercy—and the promotion of a liturgical feast. She was invited to emphasize trust: “I would like this painting to be called: Jesus, I trust in You” (Diary, 327).
The Feast of Mercy: a call for all Sundays after Easter
Jesus recommended to Faustina the institution of a feast in honor of Divine Mercy, to be celebrated on the first Sunday after Easter (Sunday in albis / Sunday of Divine Mercy). This liturgical choice echoes the Easter theme: mercy springs from Christ's victory over death and is offered as God's response to the human condition. Faustina noted this appeal: "Today, let the soul draw near... I give it abundant graces" (Diary, 299). This liturgical element would later meet with the official approval of the Church after many years.

Selected excerpts from the Journal
Confidence despite persecution
"Satan always takes advantage of such moments: this is the reward for your fidelity and sincerity," he whispers to her, "how can one be sincere when one is misunderstood?... A clear and reassuring voice then said to me: 'Do not be afraid, I am with you.'" (Diary, 1266). This passage illustrates the fundamental reality of the mystical life: the inner trial can be the focus of a greater gift, the confirmation of the divine presence beyond human incomprehension.
Missionary call and concern for souls
"I send you to all humanity with my mercy. I do not want to punish aching humanity; I desire to heal it, holding it close to my heart." (Diary, 570). Here the universal scope of the message is revealed: mercy is not a private comfort but an ecclesial mission, destined to reach every human wound.
Union with the Passion (extract 3)
“When it seems to you that your sufferings are beyond your strength, look at my wounds. Meditation on my Passion will help you to rise above everything. I need your sufferings to save souls.” (Diary, 562). This extract explains the salvific meaning that Faustina gives to her trials: they have a redemptive value when they are offered in union with the Passion.
The image and the inscription
“Paint a picture according to the model you see, and under it write: ‘Jesus, I trust in You.’” (Diary, 47). Simple and precise, this commandment shows the importance of visual devotion and the slogan that will become a cry of confidence for millions of faithful.
Purpose of the given life
“I have been animated by an inner fire to love God and to save souls… I am consumed with the desire to save souls… I do this through prayer and sacrifice.” (Diary, 570–571) This last extract sums up Faustina’s missionary spirit: prayer, sacrifice, a heart turned towards the salvation of souls.

Reception, controversies and ecclesial recognition
Initial reactions
The reception of these revelations was mixed. Even within her institute, Faustina encountered incomprehension and skepticism. Some church leaders hesitated in the face of supernatural claims, while others feared the possible excesses of private devotions. These reactions were understandable in a context where the Church had to protect the public faith and prevent deviations. Paradoxically, human resistance sometimes helped strengthen the fidelity of the promoters of devotion, who had to preach trust and patience.
Dissemination and obstacles
After Faustina's death in 1938, her writings, entrusted to the Congregation, began to circulate, first locally and then more widely. The Second World War partly interrupted this diffusion, but the devotion gained momentum in the post-war period, notably through the work of Father Michał Sopoćko (her confessor) and through the promotion of the image and the cult. However, controversies arose: criticism of the authenticity of the visions, debates on the underlying theology, and in the 1950s–60s, temporary administrative warnings from certain ecclesiastical departments due to interpretative errors or exaggerated practices.
Canonization and liturgical approval
The perseverance of the faithful and promoters of the devotion bore fruit. In 2000, Pope John Paul II, himself Polish and deeply influenced by mercy during his pontificate, proclaimed Saint Faustina Kowalska a Doctor of the Church—a symbolic title recognizing the importance of her spiritual message—and instituted Divine Mercy Sunday in the universal liturgical calendar. This recognition brought the devotion into the living tradition of the Church, not as an isolated novelty, but as a renewal of the Easter faith.
What does mercy mean today?
A response to the violence of the 20th century and our own
Mercy, as proposed by Faustina, is a spiritual response to the collective wounds of the 20th century: wars, totalitarianism, genocide, and exclusion. Offering the face of a compassionate God, who seeks not to punish but to heal, is also an implicit critique of systems that dehumanize. In the 21st century, in a world marked by indifference, social fractures, and suffering, this message remains entirely relevant: mercy places encounter at the heart of faith.
Spiritual Practice: Trust, Confession, and Active Mercy
Concretely, living mercy according to Faustina involves:
- Cultivate trust in God: Repeat “Jesus, I trust in You” as an act of faith.
- Seek conversion through regular confession, recognized by Faustina as a source of grace.
- Deploy active mercy: forgive, help the poor, pray for sinners, be close to the suffering. Mercy is not only interior; it transforms relationships with others.
Some ideas for deepening devotion
Read the Journal with a Spirit Guide
The Diary of Saint Faustina deserves to be read slowly and, preferably, accompanied by a spiritual director or a reading group. The mystical excerpts can be dense and require a pastoral and theological reading to avoid isolated interpretations.
Practice the Chaplet of Mercy and the Holy Hour
The Rosary and Holy Hour, as recommended by Faustina, are concrete ways to connect with divine grace. They help refocus the day on prayer and bring the world's needs into intercession.
Putting the image in places of compassion
Placing the image of the Merciful Christ in meeting places, hospitals, prisons, and parishes, recalls God's closeness to the weakest. The image, simple and expressive, encourages prayer and hope.

Testimonies and spiritual fruits
Stories of conversion and inner peace
Since the spread of the devotion, numerous testimonies report spiritual conversions, family reconciliations, and returns to faith after years of estrangement. Mercy invites us to transform our outlook: to see others not as enemies but as people loved by God.
A spiritual current in the contemporary Church
The spirituality of mercy has permeated the recent magisterium: from John Paul II to Francis, mercy occupies a central place in the Gospel proclamation. This current places less emphasis on judgment and more on mercy convertible into ethical commitment: charity, justice, and the protection of the vulnerable.
Conclusions: Maintain hope and confidence
A simple word for troubled times
The life of Saint Faustina reminds us that a simple word—"Jesus, I trust in You"—can become a beacon of light for troubled lives. Her mission, born in a small cell and in obedience, spread throughout the world through the power of mercy offered to each and every one.
A call for responsibility
Mercy also calls for responsibility: it requires not only receiving peace, but also distributing it. Nourished by prayer and confession, called to compassion, we are invited to be agents of healing around us.
Appendices: references and landmarks
Quick bibliographic excerpts
- Diary of Saint Faustina (abbreviated Diary), current editions: sections cited in the article (numbers often indicated according to the Polish/French version). The numbers cited here are taken from modern editions; depending on the edition, the figures may differ slightly.
- Biographies and studies: Michał Sopoćko, “The Message of Divine Mercy”, and historical works on the congregation of the Sisters of Mercy.
Key dates
- August 25, 1905: Birth of Helena Kowalska (Saint Faustina).
- 1938: death of Sister Faustina.
- 2000: Canonization by Pope John Paul II and inclusion of Divine Mercy Sunday in the universal calendar.
Final prayer inspired by the Lord's Journal
Jesus, grant us the grace of trust; may our hearts learn your forgiveness and become instruments of your mercy. “Jesus, I trust in you.”



