Rambam's 8th Principle: Torah from Heaven
The 8th principle is having belief that the Torah we have today was transmitted from G-D to Moshe Rabenu directly, and was transmitted faithfully through the generations until our present day. This is a core belief within the Jewish faith - the authenticity of the Torah, and tracing its origin back to G-D. Moreover, emphasizing the centrality and faithfulness of this transmission. Understanding that the Torah is tried, tested and true.