In some mystical and scholarly Jewish traditions, it is said that the Torah has "70 faces" ("shiv’im panim laTorah"), meaning it can be interpreted in 70 different ways. Why do older commentaries and interpretations carry more "weight" than modern ones?

I can see why the Torah is said to have “70 faces.” It’s likely because a devout Jew reads the Torah many times throughout their life. The “faces” do change, probably because the meanings evolve over time. Language is a living thing, constantly changing, so it makes sense that interpretations would shift too. But why do older interpretations like the Talmud and Midrash carry more weight in Judaism than modern ones? I’m not suggesting that these traditional interpretations are invalid, but they might not be fully in tune with the modern world.

Just to clarify, I’m not Jewish—I’m simply curious about the world’s religions.