JL;DR

The discussion centers on the paramount transformation in the Jewish tradition resulting from the event at Mount Sinai, where the Torah was given. Before Sinai, Jewish teachings were primarily transmitted orally and were not yet formally codified into the text that would become known as the Torah. This event marked the transition from a more ethereal, spiritual tradition to one grounded in a written text that prescribes life and laws for the Jewish people. The formalization of these teachings into a written form at Sinai underscores a pivotal moment where the Jewish people entered into a covenantal relationship with God, with the Torah serving as a tangible covenantal document.