What was Yitzchak's question?
Targum Yonasan: ?Why do you come to me, that I should pray for you ? seeing as you hated me, and drove me out?? 1
Ohr ha'Chayim: ?Surely you are not afraid that I will abbrogate Avraham's Shevu'ah to you ? because, since he did not do so, I cannot do it either. If it is to help me, to let me return; all of you hated me due to jealousy. Surely this has not changed??
Malbim: Did you come for peace, or for war? It cannot be for peace since you hated me. And it cannot be for war, since you sent me away, and ad you wanted to fight, you would have done so when I was with you??
Ha'amek Davar: ?Surely you did not come for friendship, since you hated me!?
Note that Yiftach (in Shoftim 11:7) made a similar comment to the elders of Gil'ad, who came to visit him when they needed him, after having driven him away.
Avimelech had told Yitzchak, "Lech me'Imanu" (26:16). Why did Yitzchak imply that he had said, 'Lech me'Itanu'?
Ha'amek Davar: "Me'Imanu" implies that you should not be so close - the Bris did not obligate letting you be so close - but you need not go far away. Yitzchak replied "Atazmta Mimenu" was a mere pretext. You wanted me to go 'me'Itanu' - not to be in your city at all!
