Exodus 20:15

וכל העם ראים AND ALL THE PEOPLE SAW — This statement teaches us that there was not a blind person amongst them. And whence may we learn that there was not a dumb person amongst them? Because it states (Exodus 19:8) “And all the people answered”. And whence may we learn that there was not a deaf person amongst them? Because it states (Exodus 24:7) “We will do and we will hear” (Mekhilta). ראים את הקולת [THEY] SAW THE SOUNDS — they saw that which should be heard (Mekhilta) — something which is impossible to see on any other occasion. את הקולת THE SOUNDS which issued from the mouth of the Almighty. וינעו THEY MOVED — The root נוע denotes trembling (Mekhilta). ויעמדו מרחק AND THEY STOOD AFAR OFF — they moved back startled twelve miles, a distance equal to the length of their camp, and ministering angels came and assisted them — to bring them back, as it is said, (Psalms 68:13) “The angels of the God of Hosts made them move on, move on” (Shabbat 88b).

וְכׇל־הָעָם֩ רֹאִ֨ים אֶת־הַקּוֹלֹ֜ת וְאֶת־הַלַּפִּידִ֗ם וְאֵת֙ ק֣וֹל הַשֹּׁפָ֔ר וְאֶת־הָהָ֖ר עָשֵׁ֑ן וַיַּ֤רְא הָעָם֙ וַיָּנֻ֔עוּ וַיַּֽעַמְד֖וּ מֵֽרָחֹֽק׃

And all the people perceived the thunderings, and the lightnings, and the sound of the shofar, and the mountain smoking: and when the people saw it, they were shaken, and stood afar off.