[Avodah] Was Avraham a Lamdan?

[Prof. Levine]

 From http://tinyurl.com/7b5zk78

The Mishnah at the end of Kiddushin says that Avraham kept the whole 
Torah.[1] The Rambam (Hil. Melachim 9:1) brings down the mitzvos that 
each of the Avos innovated. Many laws are learned from the stories in 
Bereishis even though they happened before the giving of the Torah.

However, Chazal do not discuss any of the questions arising from the 
statement that the Avos "kept the Torah."[3] Here and there, the 
commentators discussed some of the more obvious questions. For 
example, the Ramban in his commentary on the Torah (Gen. 26:5) 
famously asks how Ya'akov could have married two sisters, something 
prohibited by the Torah. This question in particular seemed to have 
intrigued many commentators.

<Snip>

Would a Chassidic Rebbe admit that his "Toyreh" is not the true 
explanation of the verse? That is a question that I cannot answer.

See the above URL for the rest of this article.  YL