The interpretation timeline

Exod 19:20

How this passage has been read — the sources, oldest to newest.

From the early Church Fathers to now.

Exod 19:20 · Douay-Rheims
“And the Lord came down upon mount Sinai, in the very top of the mount, and he called Moses unto the top thereof. And when he was gone up thither,”
Patristic before A.D. 750
735
A.D.
Bede Patristic
A.D. 673–735
“Moses alone ascended to its very top, where the divine majesty shone forth in fire and a dark cloud. Only the more perfect know how to grasp and observe the deeper and most secret mysteries of the law; the carnal-minded people, content with the external aspects of the letter, and gathered apart, as it were, and below, stood to hear the words from heaven.”
Source
Modern · 1953 →

The in-app commentary runs from the Fathers to the early-modern record, then stops — that's where the public-domain sources end, not where the reading does. For the modern reading, follow the sources directly.