“The Lord spoke to Moses” – happy is Moses that six hundred thousand were standing; the priests, the Levites, and the elders were all standing there, and from all of them He spoke only with Moses.
“The Lord spoke to Moses in the wilderness of Sinai” – why in the wilderness of Sinai? From here the Sages taught that the Torah was given with three elements: With fire, with water, and in the wilderness. With fire, from where is it derived? “Mount Sinai was all smoke, [because the Lord had descended upon it in fire]” (Exodus 19:18). In water, from where is it derived? It is as it is stated: “Indeed, the heavens dripped, indeed, the clouds dripped water” (Judges 5:4).9The verse is a reference to the giving of the Torah. In the wilderness, from where is it derived? “The Lord spoke to Moses in the wilderness of Sinai.” Why was it given with these three elements? It is, that just as these are free for all mankind, so, matters of Torah are free, as it is stated: “Ho, everyone who is thirsty go to water” (Isaiah 55:1).10“Incline your ear and go to Me; take heed and your soul will live” (Isaiah 55:3), a reference to Torah, is written two verses later. Another matter: “The Lord spoke to Moses in the wilderness of Sinai” – it is, that anyone who does not render himself like a wilderness, accessible to all, is unable to acquire wisdom and the Torah. That is why it is stated: “In the wilderness of Sinai.”