Midrasz do Izajasza 2:5

"And God called to him [Moshe] from the mountain, saying" (Exodus 19:3). God called to Moshe in the merit of the mountain, as it says (Micah 6:2) "Hear, mountains, the case of God". And Moshe ascended to the God, ascended in cloud and descended in cloud, and the merit of the forefathers ascended and descended with him. "So you shall say to the house of Jacob" (Exodus 19:3) -- these are the women. God said to Moshe, speak to them of the general matters [literally: heads of things] that they are able to hear. "And tell to the children of Israel" (Exodus 19:3) -- these are the men. God said to Moshe, say to them particulars of things that they are able to hear. Another explanation: why were the women first? Since they are keen with mitzvot. Another explanation, so that they could accustom their children to Torah. Rabbi Tachlifa Dekeisarin ["kingmaker"?] said, the Holy Blessed One said 'When I created the world, I commanded only the First Man; and after that Chava was commanded, and she transgressed and corrupted the world. Now, if I do not call to the women first, they will nullify the Torah.' So it says, "So say to the House of Jacob". And Rabbi Yochanan said: "So say to the House of Jacob", this is the Sanhedrin, as it says (Isaiah 2:5) "O House of Jacob! Come, let us walk by the light of the LORD." (Exodus 20:1) "And God spoke all these words, saying" - the Holy Blessed One leads Israel in the manner [?] of kings, as it says (Song of Songs 4:8) "With me from Lebanon, my bride!". Why so? In the merit that they said (Exodus 24:7) "We will do and we will hear."