And what are the implications of "asher Yitav lach ... "?
Ramban and Targum Yonasan: It implies that Hashem commanded us to observe the Mitzvos for our own sakes
What does the Torah mean when it writes "Eretz Zavas Chalav u'Devash"?
Rashi (in Bo): Refer to Sh'mos, 13:5:2:1.
Seforno: It is a metaphor meaning that if the people observe the Mitzvos, the land will sustain them without trouble
What exactly, is "Eretz Zavas Chalav u'Devash" referring to?
Ramban #1 (citing the Ibn Ezra #1): It is referring to the word "Lerishtah" (in Pasuk 1).
Ramban #2 (citing the Ibn Ezra #2): It means that Hashem will do good to you and increase you in the land 1 flowing with milk and honey".
Ramban #3: ' ... in order to do good to you and because 2 Hashem the God of your fathers said that He would give you a land flowing with milk and honey'.
Ramban #4 3 : The Pasuk reads ' ... in order to good to you and to increase you immensely ... as Hashem the G-d of your fathers said about you that He would give you 4 a land 5 flowing with milk and honey. 6
Ibid. As if it had written 'be'Eretz' with a 'Beis'.
Ramban: Because the word "Lema'an" (in Pasuk 2) carries over to this Pasuk as well, or because "Asher" and "Ka'asher" imply 'because' or 'in order' - See Ramban.
This is how the Ramban finally explains the Pasuk. Although he seems to equate it with his previous explanation (Refer to 6:3:3:3), it appears to be an independent explanation.
Ramban: Like in Pasuk 18.
Ramban: 'A wide and spacious land.