Kabbalah su Neemia 9:6

Now, the pure soul, which is compared to the fruit, consists of 613 organs and veins and resides within the 613 organs and veins of the impure soul, which is compared to the shell (Kelipah) covering over the fruit. In turn, they both reside within the 613 organs and veins of the body. Thus, the organs of the pure soul reside within the organs of the evil soul and the organs of the evil soul reside within the organs of the body. In order to exist, each of these two souls needs spiritual sustenance. However, the spiritual sustenance of the holy soul is drawn to it through the fulfillment of the Torah, which consists of 613 mitzvoth, corresponding to the 613 organs of the soul. Thus the Torah is called “bread”, as in the verse¹⁵Proverbs 9:5, “Come, partake of My bread”. Each of the 248 organs receives sustenance from a specific mitzvah that relates to that organ. However, if a person lacks the fulfillment of any mitzvah, the organ specific to that mitzvah will lack the sustenance drawn to it from the four letters of HaShem. This is indicated by the verse¹⁶Nehemiah 9:6, “You (HaShem) give life to all.” All the mitzvoth depend on these four letters, as our sages of blessed memory said, “The letters Yud (י) Hey (ה) coupled with the word, “My name” (שמי) of the verse, “This is My name and this is My memorial (זה שמי וזה זכרי) have the numerical value of 365. The letters Vav (ו) Hey (ה) coupled with the word, “My memorial” (זכרי) of the same verse, have the numerical value of 248.”

Thus, Aleph-Tav (E"T) includes all the letters from beginning to end. Afterwards, the letter Hei was added to E"T, so all the letters would be united with Hei. This formed the word 'you' (Aleph-Tav-Hei) Thus, the verse reads: "And you do preserve them all". E"T is the secret of Adonai and is so called. Heaven is Yud-Hei Vav-Hei, which is superior to the name Adonai, for Zeir Anpin, called "the heavens" and also called "voice," is the secret of the name of Yud-Hei Vav-Hei. And his Female principle, called 'E"T' and 'speech,' is the secret of the name Adonai.