Not So Fast: Viral Miracle Clips and the Church That Waits

A short clip has been doing the rounds on X this week. It shows a consecrated Host in a monstrance in Mexico and claims that, back in July 2022, it began to pulse “like a human heart”. The post gathered well over a thousand likes and plenty of heart emojis. Tucked into the caption was a line that most people scrolled straight past: the Church has not confirmed it.

Within hours, the replies split into the usual camps. Some Catholics shared it as proof. Some sceptics called the whole thing nonsense. A few Protestant voices asked a sharper question: even if something strange did happen, why should that prove anything about Catholic doctrine? And one reply put the sceptic’s case bluntly: there is no scientific proof that a single Eucharistic miracle has ever occurred.

Thursday on this blog is about miracles. We have already looked at David Hume’s famous objection and at the general case for the supernatural. This week I want to look at something less dramatic but, I think, more persuasive: the Catholic Church’s habit of saying “not so fast”.

A Church That Is Slower Than Its Fans

If the Church were simply in the business of manufacturing wonders to keep people in the pews, you would expect her to approve every promising story that comes along. The opposite is true.

Take Lourdes. Since Our Lady appeared to St Bernadette in 1858, millions of pilgrims have come to the grotto. According to the sanctuary, more than 7,000 cases of reported healing have been documented and studied. The number formally recognised as miracles? Seventy-two. The most recent, proclaimed on 16 April 2025, was Antonia Raco, an Italian woman cured of primary lateral sclerosis after a pilgrimage in 2009. Her file was opened in 2010. The Lourdes Medical Bureau met about her case in 2012, 2013, 2016 and 2017. She was independently assessed by neurologists at the University of Milan. Only in November 2024 did the International Medical Committee of Lourdes vote that her cure was “unexpected, complete, lasting and unexplained” according to medical knowledge. Even then, the final word belonged to her own bishop.

That is fifteen years from healing to proclamation. Nobody in that process was chasing likes.

Or consider the Vatican’s current rules for alleged apparitions, visions and other unusual phenomena, issued by the Dicastery for the Doctrine of the Faith on 17 May 2024. The norms set out six possible conclusions, ranging from nihil obstat (no objection) through to a formal declaration that a phenomenon is not supernatural. What surprises many people is that even the most positive outcome, the nihil obstat, does not declare that the event is certainly supernatural. It says only that there are signs of the Holy Spirit at work in the spiritual experience surrounding it, and nothing dangerous has been found so far. Bishops are allowed to encourage the devotion, but no Catholic is obliged to believe it.

Why the Caution Is the Point

This is not institutional nervousness. It flows straight from Scripture.

Jesus worked astonishing signs, yet he refused to perform on demand. When the Pharisees asked him for a sign, Mark tells us he “sighed deeply in his spirit” and said, “Why does this generation seek a sign? Truly, I say to you, no sign shall be given to this generation” (Mark 8:12). In the parable of the rich man and Lazarus, Abraham warns that those who will not hear Moses and the prophets will not be convinced “if some one should rise from the dead” (Luke 16:31). Saint Paul tells the Thessalonians to “test everything; hold fast what is good” (1 Thessalonians 5:21), and Saint John urges us to “test the spirits to see whether they are of God” (1 John 4:1).

The Catechism holds two truths together here. On one hand, the miracles of Christ and the saints are “the most certain signs of divine Revelation, adapted to the intelligence of all” (CCC 156, quoting the First Vatican Council). On the other, Jesus’ signs “invite belief in him” (CCC 548). They invite; they do not force. And when it comes to later, private revelations, the Catechism is clear that they “do not belong to the deposit of faith”. Their role is “not to improve or complete Christ’s definitive Revelation, but to help live more fully by it in a certain period of history” (CCC 67).

In other words, the Catholic faith does not stand or fall on a video from Mexico. It stands on the life, death and Resurrection of Jesus Christ, handed on by the apostles. Later miracles are like flowers growing from that root, not the root itself.

The Strongest Objection: Bacteria, Bias and Rival Claims

The sceptic deserves a fair hearing, and the best version of the objection runs something like this.

First, many “bleeding Host” stories have a natural explanation. Historians and microbiologists have long pointed to Serratia marcescens, a bacterium that can grow on starchy food and produce a blood-red colour. Second, people who already believe are primed to see what they hope to see. Third, other religions report healings too. So why should a Catholic miracle count for more than anyone else’s?

Each point has real weight, and an honest Catholic should admit it. Some reported wonders have turned out to be contamination, wishful thinking or outright fraud. That is exactly why the 2024 norms include an option for declaring a phenomenon not supernatural, and why Lourdes rejects the overwhelming majority of claims put before it.

But notice what the objection actually shows. It shows that some claims are false and that careful testing is needed. It does not show that every claim must be false. To say that in advance would be to decide the question before looking at the evidence. Saint Augustine put it neatly sixteen centuries ago: a miracle happens not contrary to nature, but contrary to what is known of nature (City of God, XXI.8). The honest scientist and the honest believer can stand together at that point and say, “We do not yet know.” The Lourdes doctors sign off only on cures that remain unexplained after years of follow-up, not on cures that are merely surprising.

As for rival claims, the Church has never taught that God is unable to show mercy outside her visible walls. The question is not whether wonders happen elsewhere, but what they point to. A Catholic sign is judged not only by medicine but by its fruit: does it lead people to Christ, to the sacraments, to repentance and charity? A wonder that fed pride or division would fail that test, however spectacular.

What to Do With the Next Viral Clip

So where does this leave the ordinary Catholic scrolling past a pulsing Host or a weeping statue at eleven o’clock at night? Here are three simple habits.

Hold it lightly. You can say, “That is remarkable, I will pray about it,” without staking your faith on it. If the Church has not ruled, neither should you.

Check the source. Has the local bishop said anything? Has there been a proper investigation? A caption saying “doctors confirmed it” is not the same as a medical file.

Go back to the root. The greatest Eucharistic miracle is the one that happens at every Mass, unseen and unmeasurable. Jesus told Thomas, “Blessed are those who have not seen and yet believe” (John 20:29). The quiet miracle on the altar on Sunday is no less real because it does not trend.

Ironically, the Church’s refusal to rush is one of the strongest arguments for taking her seriously. An institution that waits fifteen years, convenes neurologists and still says only “unexplained” is not behaving like a factory of fairy tales. She is behaving like someone who believes truth matters, and that God does not need our exaggerations.

What about you? Have you ever shared a “miracle” online and later wished you had waited? Or has a slow, carefully tested sign strengthened your faith? I would love to hear your thoughts in the comments.

— Noah Marshall