Rashi on Genesis 22:5/רש"י על בראשית כ״ב:ה׳

1עד כה YONDER — meaning a short distance: to the place in front of us. The Midrashic explanation (based upon the meaning of כה “thus”) is: I will see where will be (i.e. what will happen to) the promise which God made to me, (Genesis 15:5) “Thus (כה) shall thy seed be” (Genesis Rabbah 56:2).

2ונשובה AND WE WILL COME BACK — He prophesied that they would both return (Midrash Tanchuma, Vayera 22).