פירוש על בראשית 26:28

ראו ראינו WE SAW PLAINLY (literally, seeing we have seen) — We saw it in the case of your father and we see it in the case of yourself (Genesis Rabbah 64:10).

תהי נא אלה, which is בינותינו, between your father and me should remain in force also between בינינו, ובינך, between you and me. This had been part of the condition of that pact that neither Avraham’s children nor grandchildren were allowed to renege on a promise he had made on their behalf. (21,23)

כי היה ה' עמך, we do not want to make a deal with you because we are afraid of you, but because G’d is on your side.