“וַיָּזֶד יַעֲקֹב נָזִיד וַיָּבֹא עֵשָׂו מִן הַשָּׂדֶה וְהוּא עָיֵף.”
“Now Jacob cooked a stew; and Esau came in from the field, and he was weary.”
The word ‘נָזִיד’ ‘Stew’ has a root that is also used to describe ‘thoughts’, or ‘planning’ as in (Exodus 18:11) “אֲשֶׁר זָדוּ עֲלֵיהֶם” “that they thought to hurt them”. It means that the heart, Jacob, thinks and meditate in the Torah to know God.
The nature of the liver is to ‘hunt’ for food and swallow it. When there’s no food, the liver becomes ‘weary’ and tells the heart “while you are busy thinking about the Torah, you should think about food to sustain the body”
Esau is the aspect of the Liver. We read “Esau came in from the field, and he was weary”, and then we read in Genesis 25:30
“וַיֹּאמֶר עֵשָׂו אֶל יַעֲקֹב הַלְעִיטֵנִי נָא מִן הָאָדֹם הָאָדֹם הַזֶּה כִּי עָיֵף אָנֹכִי עַל כֵּן קָרָא שְׁמוֹ אֱדוֹם.” “And Esau said to Jacob, “Please let me have a swallow of that red stuff there, for I am famished.” Therefore his name was called Edom (Red).”
The liver demands his food to swallow and send it to the other body parts. The heart replies; (Genesis 25:31) “וַיֹּאמֶר יַעֲקֹב מִכְרָה כַיּוֹם אֶת בְּכֹרָתְךָ לִי.” , “But Jacob said, “First sell me your birthright.””
The ‘birthright’ is the initial desire that without it the Liver and the rest of the body parts cannot swallow the food. They are dependent on the heart in this process.
Rabbi Yossei says that it’s like to ways of the slaves. They cannot eat until their master eats first.
Before science discovered the functions of different body parts, the Zohar knew it all because everything follows the spiritual system and not the other way around.
The liver is the largest internal body part and life depends on it. The liver ‘swallows’ and stores food in the form of Glucose that is like a backup fuel for the body. When the energy in the body is consumed, the Liver is triggered to release energy from its storage. It then calls the heart to raise the desire to eat and sustain the body.
The Liver process and transforms the nutrition from the food into blood and energy. The soul level of Nefesh circulates in the blood and gives the Liver the ability to regenerate and heal itself, a quality that no other body part has.
The cooperation of the heart and liver in the body is critical. If one of them is weak then it affects the other.
The Zohar teaches us that the heart should be busy with Torah and spirituality until it gets the ‘call’ to replenish energy in the body.
The ideal behavior for a healthy mind and body is to wait for the hunger, the ‘call’, before eating or drinking.
I personally skip breakfast because I don’t feel hungry in the morning. After morning prayer that ‘feeds’ the heart, I drink a small cup of warm water with a squeeze of half a lemon and a teaspoon of Apple cider vinegar. It gives a push of fresh energy in the body. About an hour or later I drink a sugarless tea but spiced with ginger and cinnamon (grounded). My first meal is in the early afternoon.
I share this with you following the teachings of the Zohar. Fasting or skipping meals is very beneficial for the body to but you must consult with a professional that knows your physical condition.