--- title: "Encyclopaedia of the Holy Spirit: what Arvor built in order to give it away" description: "Arvor has published holyspirit.wiki: 92 documented wonders, narrated in the first person by the Holy Spirit and followed by a sourced record, plus 89 prayers, the Rosary and the Chaplet of Divine Mercy, in 19 languages. No ads, no charge, no commercial purpose." date: 2026-09-03 canonical: https://arvor.co/en/news/encyclopaedia-of-the-holy-spirit --- In 2006 a fifteen-year-old boy died of leukaemia, leaving behind something improbable for his age: an online catalogue of the world's Eucharistic miracles, built by him, page by page. His name was Carlo Acutis. He was canonized in 2025. The catalogue outlived him. The [Encyclopaedia of the Holy Spirit](https://holyspirit.wiki/en) grows out of that continuity. It is a Catholic encyclopaedia of miracles, published by Arvor, free, without advertising and without any commercial purpose. What Carlo began with one collection, the Encyclopaedia extends to the whole history of salvation. ## What is inside Ninety-two documented wonders, arranged in eight chambers: the Old Testament, the miracles of Christ, the apostles, the saints, the Marian apparitions, the Eucharistic miracles, the guardian angels and the exorcisms. Every story is told twice, and this is where the editorial decision that holds the whole project together lives. First comes the narrative, written in the first person, in the voice of the Holy Spirit himself. Then comes The Record: dates, places, scriptural citations, laboratory findings, canonical processes, rulings of the Church. The narrative is literary devotion. The Record is fact. The boundary between them is never blurred, because the moment it blurs the reader loses the right to know what he is reading. One example among the [Eucharistic miracles](https://holyspirit.wiki/en/stories/category/eucharistic). In August 1996, in a Buenos Aires parish, a consecrated host was collected and placed in water to dissolve, as custom requires. Over the following days it turned into what appeared to be bleeding flesh. The case was handled personally by the region's auxiliary bishop, Jorge Mario Bergoglio. Later scientific studies identified living human heart muscle under inflammatory stress. All of that sits in the [Record of the Miracle of Buenos Aires](https://holyspirit.wiki/en/stories/miracle-of-buenos-aires), with source and date. What the Spirit says about it sits in the narrative, just above. Two texts, and the reader always knows which one he is in. ## An oratory, not a shop window Beside the stories stands the Oratory: [eighty-nine prayers](https://holyspirit.wiki/en/prayers) gathered and translated, from the Our Father to the Hail Holy Queen, from the Litany of the Holy Spirit to the prayers of the saints and of the apparitions. And there are the two crowns most Catholics pray without ever having a decent guide at hand: [the Rosary](https://holyspirit.wiki/en/rosary), bead by bead, with the twenty mysteries painted one by one, and [the Chaplet of Divine Mercy](https://holyspirit.wiki/en/chaplet), with the Hour of Mercy and what Christ asked of St Faustina. There is no donate button, no premium tier, no invitation to leave an e-mail address. The pages exist to be prayed and to be passed on. ## Why an AI company gives this away The short answer is that not everything one builds has to become a product. The long answer is that a battle is under way, and it is not a political one. It is the old battle, light against darkness, hope against despair. Anyone who works in technology knows perfectly well that human attention has become contested ground: the infinite scroll, the anger sold as engagement, the loneliness packaged as convenience. A company that builds artificial intelligence agents has, at the very least, the duty to ask what it is planting in that ground. The chamber of [exorcisms](https://holyspirit.wiki/en/stories/category/exorcisms) is worth reading with that question in mind. There you will find, among others, [the vision attributed to Leo XIII](https://holyspirit.wiki/en/stories/the-vision-of-leo-xiii), the pope who in 1886 sent the bishops of the world the short prayer to St Michael the Archangel, recited kneeling after every Low Mass until the liturgical reform of 1964. The Record is honest about what is known and what is not: the account of the vision survives only in two mid-twentieth-century recollections, and the Encyclopaedia says so plainly rather than selling cheap emotion. ## How the technology serves the devotion Nineteen languages, chosen on a double criterion: the most spoken tongues on earth, and the tongues of the lands where these things happened, Hebrew, Greek, Turkish, Persian, Hungarian and Armenian among them. No translation is published without human review. Language models get Scripture wrong with remarkable confidence, and there is a wide gap between a text that sounds right and a text that is right. The whole architecture of the project was built around that gap: the source kept apart from the narrative, the review kept apart from the generation, the record kept apart from the devotion. It is the same principle Arvor applies to corporate knowledge systems. Here the material happens to be sacred, which raises the responsibility rather than lowering it. ## The invitation Two things, both simple. First: [tell what He has done for you](https://holyspirit.wiki/en/share). Readers' testimonies are moderated before publication, and that is how the Encyclopaedia keeps growing with stories no archive holds. Second: pass it on. One page read by one person at the right moment is worth more than any traffic metric, and traffic is precisely the metric this project has no intention of chasing. Ad maiorem Dei gloriam.