Why was there no enmity between Jacob and Esau before the stolen blessing?
There was no enmity before the stolen blessing because the birthright meant nothing to Esau. From age 24 to 77 there was no turmoil or hard feelings over it. The blessing, however, involved the material estate, and that is what sparked conflict.
Les explains that the birthright did not bother Esau and caused no turmoil between him and Jacob. From age 24 until their 77th year, there was no enmity or hard feelings over the birthright because it meant nothing to Esau. The blessing, however, was the double portion of the material estate, so that was different—it touched the pocketbook. That is why Esau became upset only after Jacob received the blessing.