What is the translation of the word "Sh'vu"?
Rashi, Targum Onkelos and Targum Yonasan: It means 'Wait'.
Why did Avraham not take his servants with him to witness the Akeidah?
Seforno: Because he was afraid that they would object or disturb him in some other way as he sacrificed Yitzchak.
What did Avraham mean when he said to them "we will go ad Koh"?
Rashi #1: He was telling them that he and Yitzchak only had a little further to go and they would soon return.
Rashi #2 and Targum Yonasan: He was pondering what would happen to Hashem's promise "Koh Yih'yeh Zar'echa" ("Koh", like the stars)!"
Considering that Avraham intended to sacrifice Yitzchak, how could he tell his servants that they would return?
Rashi: This was a prophecy that Yitzchak would return together with him, even though he himself did not realize it.
Why are the servants (Yishmael and Eliezer) equated to the donkey?