Sforno on Genesis 27:36/ספורנו על בראשית כ״ז:ל״ו

1הכי קרא שמו יעקב ויעקבני, did all this happen to me because at the time Yaakov was born he was named Yaakov so that he could now trick me? He was wondering if whoever had named Yaakov had predetermined some of his future character traits.

2הלא אצלת לי ברכה, seeing that you thought at the time you dispensed the blessing that it was I who stood before you, and you surely did not have in mind to bestow upon me the spiritual blessing, the supreme blessing, you must have reserved this blessing for my brother. You surely had not intended that I, Esau, would be the sole beneficiary of all your blessings?