(RNS) — It took a little more than a day for Father Justin, an artificial intelligence avatar posing as a priest, to be defrocked. After Catholic Answers, a site devoted to evangelizing for Catholicism, introduced the character to answer questions about the faith, Catholics on social media called the character a “scandalizing mockery of the sacred priesthood” that offered only “a substitute for real interaction.”
On April 24, Catholic Answers apologized for the experiment, and Justin was reintroduced as a lay theologian.
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Catholics close to the Vatican’s work on artificial intelligence say that Justin captures the possible problems with AI evangelization and the reasons for caution in Pope Francis’ and other church officials’ attempts to tackle AI, even as the technology is becoming an increasingly buzzy topic at the Vatican.
The Rev. Philip Larrey, a professor in the department of formative education at Boston College, said that while he thinks Catholic Answers are a good group, “they were a little bit too quick to enter into something which is extremely complicated, and that is interactive artificial intelligence.”
San Jose, California, Bishop Oscar Cantú, who leads the Catholic faithful in Silicon Valley, said that AI doesn’t come up much with parishioners in his diocese. Nonetheless, as a leader in the computing capital of the world, Cantú said he has engaged with AI as a global and moral issue, even if he hasn’t “delved into it too much.”
Pointing to the adage coined by Meta founder Mark Zuckerberg, “move fast and break things,” the bishop said, “with AI, we need to move very cautiously and slowly and try not to break things. The things we would be breaking are human lives and reputations.”
Experts agreed that Father Justin’s imitation of the sacrament of confession was highly inappropriate.
Cantú said, “If we have some sort of a robot in the guise of a priest, it can confuse” people about the fact that the sacraments must be celebrated in person. “Just because Father Justin recites the formula, that doesn’t make it a sacrament,” he said.
The bishop cautioned that AI chatbots should make very clear that they are AI. “It’s so critical that we be as transparent as possible, for the sake of the people we’re trying to guide,” Cantú added.
Even Justin introducing itself as a lay theologian is problematic. “A person who may be incredibly knowledgeable of Scripture and of church teaching but is not a person of faith does not do theology, because theology begins with faith,” the bishop said.
Bishop Oscar Cantú. (Photo courtesy Creative Commons)
Noreen Herzfeld, a professor of theology and computer science at St. John’s University and the College of St. Benedict and one of the editors of a book about AI sponsored by the Vatican Dicastery for Culture and Education, said that the AI character was previously “impersonating a priest, which is considered a very serious sin in Catholicism.”
The leaders don’t dismiss the usefulness of AI when used properly. Cantú said that AI can do “tremendous work” as “a tool that can be used for good for doing research.” But, he added, “A person of faith doing theology then needs to judge the credibility of each source and the authority of each source.”
Larrey, who has worked closely with both Vatican and AI leaders on the ethical issues surrounding AI, emphasized that Pope Francis is interested in “person-centered AI,” meaning that AI must be used “for the good of human beings” and “not the detriment of people.”
The best example of AI being used for evangelization, Larrey said, is Magisterium AI, a chatbot developed by Longbeard, a digital strategy firm founded by a former seminarian named Matthew Harvey Sanders, a friend of Larrey’s. The bot explains church teaching in a format like ChatGPT, by drawing on official church teachings, as well as select writings such as the works of St. Augustine and St. Thomas Aquinas, linking to the documents that informed its answer.
Larrey distinguishes such automated research from generative AI, which learns and experiments with its newfound knowledge. “When you have a generative AI, if you’re not careful, it gets out of hand,” he said.
