Sforno on Exodus 24:12/ספורנו על שמות כ״ד:י״ב

1עלה אלי ההרה, to the top of the mountain. This was after he had already approached more closely than the people with him, as we have read in verse 2, ונגש משה לבדו “only Moses alone is to approach any closer.” Nonetheless, at that point he had not ascended the summit of the mountain. It was on this occasion, while they looked after Moses disappearing into the cloud forming a shroud around the mountain, that the “nobles” and the elders had the vision just described. This is what was meant in verse 17 with the words ומראה כבוד ה' כאש אוכלת בראש ההר, “and the manifestation of the glory of the Lord was similar to a consuming fire at the top of the mountain.” We find this formulation (ראש ההר) again during the giving of the Ten Commandments in 19,20.

2והיה שם, stay there for an extended period. The root היה appears in this sense in Deuteronomy 10,5 ויהיו שם כאשר צוני, “they have remained there as G’d had commanded me.”

3והתורה, “and the part which requires profound study,”

4והמצוה, and the part of the Torah which primarily requires action in order to fulfill it.

5אשר כתבתי, “which I (the Lord) have written.” If it had not been for the sin of the golden calf, the entire Torah would have been handed to the Jewish people (Moses) as a signed and sealed document just like the Tablets with the Ten Commandments. Moses alluded to this when he described the approach of G’d to Mount Sinai in Deuteronomy 33,2 ואתה מרבבות קודש מימינו אש דת למו , G’d was ready to hand us the whole Torah but the sin of the golden calf prevented this at that that time. Instead, Moses wrote down the Torah at G’d’s command (dictation). Moses is on record as having done this in Deuteronomy 34,27. In fact, Moses only brought the Tablets to within sight of the people in order to smash them before their eyes, so that they would understand what they had forfeited due to their disloyalty to G’d. This demonstration of Moses having smashed the Tablets was designed to shock the people into penitence.

6להורותם, to teach them. Although everything was available in the form of a written text, as we know from our sages in Taanit 9 “is there then anything which has not either been spelled out or alluded to in the text of the Torah that Moses handed down to us?” And, the Talmud Gittin 60 adds that most is spelled out in the written text and only a relatively small part was reserved for what we call the “oral Torah,” the allusions in the Torah which require profound study and most ordinary Israelites would not understand them unless they had the guidance of scholars. Knowing this, a statement by the sages which appears to conflict with the statement we quoted from Gittin 60, and which states that most of the legislation of the Torah is derived from the “oral Torah,” is not in conflict with that at all. The former statement refers to people studying under the guidance of a competent Torah scholar.