Комментарий к Берешит 25:32

הנה אנכי הולך למות BEHOLD I AM IN PERIL TO DIE — The birthright is something unstable, for not always will the sacrificial duties be performed by the first-born, for the tribe of Levi will assume this. Further Esau said: What is the nature of this Service? Jacob replied, “Many prohibitions and punishments and many acts involving even the punishment of death are associated with it — just as we read in the Mishna, (Sanhedrin 22b): The following priests are liable to death: those who carry out their duties after having drunk too much wine and those who officiate long-haired. He said: If I am going to die through it, why should I desire it.

הנה אנכי הולך למות, I am going into the forest day after day to hunt in an area full of bears, lions and other ferocious beasts, and I am risking my life on a daily basis. What point would there be in my waiting until our father dies and I get my share of the birthright? This is the way my father Rabbi Meir interpreted Esau’s words in this verse. This is the meaning of “Esau despised the birthright.” (verse 34).

הולך למות, through the excessive fatigue and exertion associated with my vocation.