The word for sustenance in Hebrew is פרנסה. The other side leads us into thinking that sustenance is only about money. The earthly fact is that we cannot eat, drink or sleep without having money to purchase whatever we need.
In Tikunei Zohar #6 Elijah the Prophet revealed himself to Rabbi Shimon and a voice from heavens prophesied
“‘וכמה בני נשא לתתא יתפרנסון מהאי חיבורא דילך כד יתגלו לתתא בדרא בתראה בסוף יומיא, ובגינה, ”וקראתם דרור בארץ”.
“Rabbi, Rabbi (Rabbi Shimon), you are great and strong tree on the Torah. The Holy parts are in your branches. Many birds rest on them, Holy souls like the ones above. It was said ‘In his branched, birds of heavens will dwell. And many people below will draw sustenance from your writing, when it will be revealed in the last generation, at the end of days. And because of that you can say ‘and you will call freedom in the land’ ”
It’s obvious that the Zohar doesn’t talk about money. A great Kabbalists, Shalom Buzaglo of blessed memory (1700-1780), explains that the sustenance in this prophecy is the connection to the Light of the Zohar that rewards the person who studies it. It purifies his soul and he can call himself free in the land.
The Zohar sustains our life and provide freedom from all forms of slavery and idol worshiping.
Money can sustain a body up to a point. When we think about sustenance we should think about sustaining our life beyond the temporary state of existence. That is possible only with the Light of the Zohar that leads us to immortality.