A Tool, Not a Voice: Artificial Intelligence, Human Speech, and Christian Communicative Agency

This article asks what it means, from a Christian philosophical perspective, to say that artificial intelligence can mediate human speech but cannot possess voice. Language-generating systems and translation systems produce outputs that recipients use within religious, journalistic, and educational practices. The article distinguishes communicative uptake from voice, authorship, and responsible agency. Voice is not a property of output but the embodied, relational, and morally answerable act of a person; authorship names how a human or institution appropriates and answers for a text. While AI may extend, translate, and summarize human speech, it cannot supply its own accountability. Drawing on Reformational philosophy and Vatican materials, the article treats AI-assisted liturgical translation as a limit case, distinguishing translation and summarization from open-ended generation, whose outputs lack testimonial authority unless independently verified and responsibly adopted. It concludes with five criteria for Christian communication: accountability, transparency, dignity, embodied voice, and attention to linguistic inequality.