It is clear to me that what Moses experienced at the revelation on Mount Sinai was different from that which was experienced by all the other Israelites, for Moses alone was addressed by God, and for this reason the second person singular is used in the Ten Commandments; Moses then went down to the foot of the mount and told his fellow-men what he had heard. Comp., “I stood between the Lord and you at that time to tell you the word of the Lord” (Deut. v. 5). Again, “Moses spake, and God answered him with a loud voice” (Exod. xix. 19). In the Mechilta our Sages say distinctly that he brought to them every word as he had heard it. Furthermore, the words, “In order that the people hear when I speak with thee” (Exod. xix. 9), show that God spoke to Moses, and the people only heard the mighty sound, not distinct words. It is to the perception of this mighty sound that Scripture refers in the passage, “When ye hear the sound” (Deut. v. 20); again it is stated, “You heard a sound of words” (ibid. iv. 12), and it is not said “You heard words”; and even where the hearing of the words is mentioned, only the perception of the sound is meant. It was only Moses that heard the words, and he reported them to the people. This is apparent from Scripture, and from the utterances of our Sages in general. There is, however, an opinion of our Sages frequently expressed in the Midrashim, and found also in the Talmud, to this effect: The Israelites heard the first and the second commandments from God, i.e., they learnt the truth of the principles contained in these two commandments in the same manner as Moses, and not through Moses. For these two principles, the existence of God and His Unity, can be arrived at by means of reasoning, and whatever can be established by proof is known by the prophet in the same way as by any other person; he has no advantage in this respect. These two principles were not known through prophecy alone. Comp., “Thou hast been shown to know that,” etc. (Deut. iv. 34). But the rest of the commandments are of an ethical and authoritative character, and do not contain [truths] perceived by the intellect. Notwithstanding all that has been said by our Sages on this subject, we infer from Scripture as well as from the words of our Sages, that the Israelites heard on that occasion a certain sound which Moses understood to proclaim the first two commandments, and through Moses all other Israelites learnt them when he in intelligible sounds repeated them to the people. Our Sages mention this view, and support it by the verse, “God hath spoken once; twice have I heard this” (Ps. lxii. 11). They state distinctly, in the beginning of Midrash Ḥazita, that the Israelites did not hear any other command directly from God; comp. “A loud voice, and it was not heard again” (Deut. v. 19). It was after this first sound was heard that the people were seized with the fear and terror described in Scripture, and that they said, “Behold the