'What is the connection between this Pasuk and the previous one (as hinted in the 'Vav' of "u'Moshe")?
Seforno: Whilst the people concerned themselves with organizing the camp, Moshe ascenced the Mountain and prepared himself for prophecy.
When did Moshe ascend Har Sinai for the first time?
Rashi and Targum Yonasan: On the following morning - the second of Sivan. 1
See Sifsei Chachamim.
What is the chronological order of the two opening phrases?
Ramban (citing the Ibn Ezra): Hashem called to Moshe, and Moshe ascended to Him. The Torah wrote these out of order.
Ramban: The moment Yisrael arrived at Har Sinai, the Cloud of Glory covered the mountain, 1 where the Shechinah was to be found. Moshe 'went up' to the Glory of Hashem - to the edge of the mountain, 2 and Hashem called to him from the mountain, and spoke to him there where he stood. 3
What are the ramifications of the word "Koh"?
Rashi: Moshe was to teach Yisrael these exact words and in this exact order. 1
Gur Aryeh: First to the women, and then to the men.
Why does it say "Somar l'Veis Ya'akov" and "Sagid li'Vnei Yisrael"?
Rashi: Beis Ya'akov refers to the women; speak to them softly. 1 Bnei Yisrael refers to the men; Speak to them words that are harsh k'Gidin (bitter vegetables
Amirah has connotations of soft speech (See Sifsei Chachamim).
Why did women merit to be told first? (Refer to 19:3:4:1*.)
Moshav Zekenim, citing R. Moshe of Narvona: It was in the merit of Leah, who engraved "Torah Tzivah
Her eyes became weak before Yakov came to Charan; we must say that she already merited Ru'ach ha'Kodesh to know "Torah Tzivah