Why does the Torah repeat 'Chukim and Mishpatim'?
Rashi #1: To incorporate details of the Mitzvos concerned that the Pasuk omitted.
Rashi #2: In order to include the Asiyah (the Mitzvos Asei) and the Shemirah (the Mitzvos Lo Sa'aseh of both the Chukim and the Mishpatim. 1
Ramban: Refer to 18:5:2:1.
See Sifsei Chachamim.
Why does the Torah switch the order from 'Mishpatim and Chukim' (in the previous Pasuk) to 'Chukim and Mishpatim'?
Ramban: Refer to 18:4:1:2*.
Seeing as the Torah is referring to a La'av ("Lo Sikr'vu"), how can the Torah use the word "asher Ya'aseh osam ... "?
Torah Temimah (citing Makos, 23b): This teaches us that someone who desists from sinning will receive a reward as if he would have performed a Mitzvah.
What are the connotations of the word "ha'Adam"?
What are the connotations of the words "va'Chai bahem"?
Rashi, Ramban #2 (citing the Toras Kohanim), Targum Onkelos and Targum Yonasan: This refers to life in the World to Come. 1
Ramban #1 (citing Yoma, 85b): To teach us that (with certain exceptions), human life overrides the Mizvos. 2
Ramban #3: Refer to 18:4:1:2*.
Ramban #4: There are four levels of life that a person earns for observing the Mitzvos, depending on the depth of one's observance 3 : 1. Long life in this world, including wealth, property and honor - for those who perform Mitzvos in order to receive reward; 2. Life which spares one the punishments of the Resha'im and their Seouls will live in goodness - for those who perform Mitzvos out of fear of punishments - in order to receive a reward in the world to come: 3. A good life in this world and a complete life in the world to come - for those who perform Mitzvos out of love of Hashem; 4. Body and Soul will live forever- for those who totally discard all interest in matters concerning this world, whose thoughts are focused exclusively on serving Hashem with body and Soul. 4
Rashbam: To extrapolate that whoever does not not abide by these Dinim will be Chayav Kareis.
Bearing in mind that in this world, everybody is destined to die (Rashi).
"va'Chai bahem", 've'Lo she'Yamus bahem' (Ramban), and, by the same token, Piku'ach Nefesh overrides Shabbos (Torah Temimah, citing Yoma, 85b).
And this explains why the Torah uses different expressions of life in different places - such as "Lema'an Ya'arichu Yamecha" (Shemos 20:12), "Lema'an Tichyeh" (Parshas Shoftim, Devarim 16:20) and "Veha'arachta Yamim" (Devarim 22:7), to hint at the various levels of life (Ramban).
Like Chanoch and Eliyahu ha'Navi, who went alive into Gan Eden.
And why does the Pasuk repeat "Ani Hashem"?