One of the questions that vexed early Christians was about the nature of Jesus himself. Was the Messiah human, divine, or something in-between? After many years, many quarrels, and some light episcopal violence, the Church arrived at its answer: The hypostatic union. Jesus is both fully human and fully divine, which he's allowed to be because he's god. So there.
Fortunately, it won't take a few hundred years of conclaves and punch-ups to discern the nature of Father Justin, an AI priest...