Factual error: The entire sequence where the two heroes have to walk rather than ride to escape the posse because it is the Sabbath is completely false. There is a reasonable chance that their lives are in danger from the posse. According to Jewish law, it is forbidden to risk one's life for the Sabbath. In that situation, not only would they be permitted to ride, they would be compelled to. There is no way the rabbi would not know this basic principle.