וישב אברהם אל נעריו ויצחק היכן הוא רבי ברכיה בשם רבנן דתמן שלחו אצל שם ללמוד ממנו תורה משל לאשה שנתעשרה מפלכה אמרה הואיל ומן הפלך הזה התעשרתי עוד אינו זז מתחת ידי לעולם כך אמר אברהם כל שבא לידי אינו אלא בשביל שעסקתי בתורה ובמצות לפיכך אינו רוצה שתזוז
After the akeidah the Torah tells us that Avraham returned to Eliezer and Yishmael, but no mention is made of what happened toYitzchak. The Midrash fills in the gap: Yitzchak did not return with Avraham, but rather was sent way to yeshiva to Shem to learn Torah. Avraham said, “All I have accomplished has been achieved only through Torah; therefore, I do not want my offspring to ever be separated from Torah.”
There's a lot I don't understand here. You mean Yitzchak did not learn Torah until this point? And would he really learn more in the yeshiva of Shem than home with his father? Furthermore, what does the mashal add to the point? (Parenthetically, the Tanchuma mentions that Avraham needed to tell Sarah something -- he needed some excuse to leave on his journey -- so he told her he was taking Yitzchak to yeshiva. True to his word, he did so.)
On a simple level I think the Midrash is telling is that the response to a remarkable event like the akeidah is not to step away, breathe a sigh of relief that it's all over, and then go to Disneyworld. Rather, those newly found kochos have to become the impetus to build on. In particular, the spiritual high of avodah needs to be brought into the limud haTorah of the day to day and not remain an isolated experience. For example, there are lots of programs that will take kids to a retreat and run a kumsitz and everyone will feel all holy and good, but there has to be a next step of then learning a Ktzos and showing up for a regular seder day in and day out.
Perhaps the Midrash also means that Yitzchak acquired an additional impetus in learning davka through the akeidah. Make no mistake about it, the akeidah was unique; it defies all comparison. That being said, the midah of mesirus nefesh which became ingrained in Jewish genes through the akeidah is part and parcel of the commitment to Torah. "Pas b'melach tochal" means a life of sacrifice. "Adam ki yamus b'ohel" -- a person has to kill himself in learning to succeed.
And after all is said and done, I don't think I've even scratched the surface of what Chazal mean here. Ideas?