לְ֭כוּ לַחֲמ֣וּ בְֽלַחֲמִ֑י וּ֝שְׁת֗וּ בְּיַ֣יִן מָסָֽכְתִּי׃
너는 와서 내 식물을 먹으며 내 혼합한 포도주를 마시고
Sha'arei Kedusha
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 impure soul and the organs of the impure 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 HaShem’s-יהו"ה Torah, which consists of 613 mitzvot, corresponding to the 613 organs of the soul. Thus, the Torah is called “bread (Lechem-לחם),”21The term “bread-Lechem-לחם-78” has a numerical value of “He was, and He is, and He will be-Hayah v’Hoveh v’Yihiyeh-היה והוה ויהיה-78,” and is a reference to the inner sustenance of the eternal Truth of the Torah of HaShem-יהו״ה, blessed is He. This is called “The Inner Bread” (Lechem HaPanim-לחם הפנים) which is a constant in the Holy Temple, as it states (Exodus 25:30), “And you shall set showbread (Lechem HaPanim-לח״ם הפנים) upon the table, before Me, always (Tamid-תמיד).” (See Ginat Egoz of Rabbi Yosef Gikatilla, translated as HaShem Is One, Vol. 4, section entitled “The First Vowel Cholem-חל״ם.”) as in the verse,22Proverbs 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 Jew lacks the fulfillment of any mitzvah, the organ specific to that mitzvah will lack the sustenance drawn to it from the four letters of the Name HaShem-יהו"ה. This is indicated by the verse,23Nehemiah 9:6 “You (HaShem) give life to all.” All the mitzvot depend on these four letters, as our sages of blessed memory said,24Zohar I 24a; Zohar III 110b, 222b; 273b, and elsewhere “The letters Yod (י) Hey (ה) coupled with the word, ‘My name’ (שמי) of the verse,25Exodus 3:15 ‘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.’”
Zohar
We have learnt that it is the duty of every one to say grace. If he cannot himself, his wife or his sons can say it for him, but a curse light on the man who does not know how to say grace himself and has to ask his wife or children.
Idra Zuta
King David, following the verse, “More to be desired are they than gold, even much fine gold; sweeter” that alludes to the three columns’ outpour of sweetness and preciousness, concludes with, “Moreover by them is your servant warned…” (Ibid.), that is, he was careful not to receive from the left column without the right. Rabbi Shimon concludes with, I testify that all my life I have been careful by them, the three columns, not to make the mistake of receiving from the left column on its own, except on one day. I was making crowns for the king in the cave of Meron, he did not make sure the left would be incorporated with the right, and I saw a flame of burning fire across the cave. That is, he saw the judgments of the left column without the right, which is burning fire, and I was shaken. Since that day I am consciously careful by them, to receive only from the three columns together, and I have not abandoned them all my life. Blessed is the portion of he who is warned by the king’s sweetmeats and properly tastes them. It is written of this, “O taste and see that Hashem is good” (Tehillim 34:9) and “Come, eat of my bread…” (Mishlei 9:5).