Why did Hashem tell Avraham to walk the length and breadth of the land?
Rashi (in Iyov, 1:7): To stroll in the land in order to get to know 'the bad (people) and the good.
Ramban #1: He was authorizing him to travel in Eretz Cana'an wherever he wanted
Ramban: And since it was a command from Hashem, Avraham fulfilled it forthwith
What are the connotations of "Vaye'ehal Avram"?
Rashi #1 (in the initial print): It means that Avram returned to his wife
Rashi (Ibid.): Even though he personally was living on the mountain