'The brain needs to be used', Pope Leo warns priests against using AI to write sermons

Addressing the clergy during a question-and-answer session, the Pope warned against the temptation to use AI tools in crafting sermons, insisting that authentic preaching cannot be outsourced to technology.

“Like all the muscles in the body, if we do not use them, if we do not move them, they die. The brain needs to be used, so our intelligence must also be exercised a little so as not to lose this capacity,” he stated as quoted by Vatican News. 

He emphasised that preaching is not merely about delivering words, but about sharing faith, something he said artificial intelligence cannot replicate.

“To give a true homily is to share faith and AI will never be able to share faith.”

The pontiff encouraged priests to remain grounded in their communities, noting that congregants seek authenticity and connection.

“If we can offer a service that is inculturated in the place, in the parish where we are working, people want to see your faith, your experience of having known and loved Jesus Christ,” he stated.

Beyond artificial intelligence, the Pope also warned clergy about the deception of the internet and social media, including platforms such as TikTok.

He described the online space as potentially deceptive, where individuals may believe they are making an impact through likes and followers rather than meaningful spiritual engagement.

“It is not you: if we are not transmitting the message of Jesus Christ, perhaps we are mistaken, and we must reflect very carefully and humbly about who we are and what we are doing,” he emphasised.

The Pope further highlighted the importance of prayer, urging priests to cultivate a genuine spiritual life rather than treating religious practices as routine obligations.

He said time spent in prayer should go beyond simply reciting the breviary, instead encouraging a deeper relationship with God.

The Pope urged the priests to build strong bonds of fraternity and support, emphasising that authentic relationships and faith-driven service remain at the core of their calling.