28 “May Hashem give you Of the dew of heaven and the fat of the earth, Abundance of new grain and wine.
v’-yi-ten l’-KHA ha-e-lo-HEEM mi-TAL ha-sha-MA-yim u-mish-ma-NAY ha-A-retz v’-ROV da-GAN v’-ti-ROSH
כח וְיִתֶּן־לְךָ הָאֱלֹהִים מִטַּל הַשָּׁמַיִם וּמִשְׁמַנֵּי הָאָרֶץ וְרֹב דָּגָן וְתִירֹשׁ׃
27:28 May Hashem give you of the dew of heaven and the fat of the earth
The Zohar, our primary mystical text, says that this blessing is what has sustained the People of Israel throughout the millennia. If so, why was Yitzchak the one who gave the blessing and not Avraham or Yaakov? Rabbi Shlomo Carlebach, the influential Hebrew songwriter of the 20th century, explained that both Avraham and Yaakov spent part of their lives outside Israel. Therefore it was only Yitzchak, who never once left the Holy Land, who was worthy of bestowing this powerful blessing.