What was the significance of descending on Har Sinai?
Malbim: The honor of Hashem Himself was revealed to them, to give to them His Torah.
Why does it say "v'Daber Imahem"?
Rashi: This is like u'Ledaber (and to speak) - "Min ha'Shamayim Hishmi'acha Es Kolo Leyasereka."
When did Hashem give to them Mishpatim, Toros...?
Malbim: While on Har Sinai, He gave to them Aseres ha'Dibros, and the entire Parshah, until the end of Mishpatim.
What is the difference between Mishpatim, Toros, Chukim and Mitzvos Tovim?
Malbim: Mishpatim are Bein Adam l'Chavero. Toras Emes is in matters of Emunah. Chukim are Mitzvos [above human intellect,] like meat and milk. Mitzvos Tovim are like "Im Kesef Talveh" (do not charge Ribis).
