“You can mend the cosmos by anything you do—even eating…. So when you are about to eat bread, say הַמּוֹצִיא (ha-motsi), ‘who brings forth’: ‘Blessed are you, YHWH our God, sovereign of the world, who brings forth bread from the earth.’ Then by eating, you bring forth sparks that cleave to your soul” (Kavvanah, a spiritual “intention,” of Rabbi Yitsḥaq Luria, recorded by Rabbi Yosef Don Don, ca. 1570, translated in Matt, The Essential Kabbalah: The Heart of Jewish Mysticism, p. 149).
The righteous man eats for the sating of נַפְשׁוֹ (nafsho), his gullet [or: his soul], but the belly of the wicked will want (Proverbs 13:25).
“When a person eats he must direct his thought so that it roam (2 Chronicles 16:9) with the blessed Holy One over each and every bite, as is written, And they beheld God and ate and drank (Exodus 24:11)” (Rabbenu Baḥya ben Asher, Shulḥan shel Arba).
“Whoever wants bread, let him eat by the mouth of the sword” (Zohar 3:188b).