A revelation in Płock
On 2 August 1893, Feliksa Kozłowska, known in religion as Maria Franciszka, reported a revelation in Płock. She said she had been shown the moral decline of the world and clergy, and called to promote adoration of the Blessed Sacrament and devotion to Mary. Her supporters understood the experience as a demand for religious renewal.
These were the conditions of Russian-ruled Congress Poland, when Catholic religious communities also faced political restrictions. Kozłowska had already established a small religious community in Płock. Her message would attract clergy and laity well beyond it.
A movement takes shape
The followers came to be known as Mariavites, a name associated with imitating Mary’s life. They promoted Eucharistic devotion and an ideal of renewed priestly conduct. These aims sound familiar within Catholic spirituality, but the movement’s organisational independence and claims about revelation created a mounting conflict with Church authorities.
We should hear both sides accurately. For members of the movement, the revelations were the foundation of a living religious calling. Roman Catholic officials rejected their authority and opposed the emerging religious organisation.
The break with Rome
The Holy Office rejected the revelations in 1904. In April 1906 Pope Pius X issued Tribus circiter condemning the movement, and later that year Kozłowska and leading associates were excommunicated. The Mariavites continued as an independent church.
This is a documented institutional conflict, not proof or disproof of what Kozłowska believed she experienced. It also reminds us that different churches and traditions have their own ways of discerning revelation.
A temple and a division
The Temple of Mercy and Charity rose in Płock between 1911 and 1914. Kozłowska was buried there after her death in 1921. The building gives physical form to a religious movement born in the city.
The movement did not remain united: theological and organisational changes under Jan Maria Michał Kowalski contributed to a split in 1935. The Old Catholic Mariavite Church and Catholic Mariavite Church remain distinct traditions. Their histories deserve to be described on their own terms, without treating the split as a colourful footnote.
Płock, revisited
In 1931, nearly four decades after Kozłowska’s revelations, Faustina Kowalska reported her foundational vision of Christ in Płock. Both women spoke of divine mercy and religious renewal, but their experiences led to radically different responses from the Roman Catholic Church.
A walk between Płock’s Mariavite Temple and Divine Mercy sites makes an unusually thought-provoking journey. The parallel does not make the women interchangeable. It shows how reported visions are shaped by people, institutions, politics and the communities that continue to interpret them.