וְאַתָּ֞ה תְּצַוֶּ֣ה ׀ אֶת־בְּנֵ֣י יִשְׂרָאֵ֗ל וְיִקְח֨וּ אֵלֶ֜יךָ שֶׁ֣מֶן זַ֥יִת זָ֛ךְ כָּתִ֖ית לַמָּא֑וֹר לְהַעֲלֹ֥ת נֵ֖ר תָּמִֽיד׃
E tu comanderai ai figli d’Israel, che ti rechino dell’olio d’oliva, chiaro, vergine [cioè estratto con una semplice ammaccatura delle olive], da illuminazione, per far ardere un lume quotidianamente.
Noam Elimelekh
"And you shall command the Children of Israel, (etc.)" It appears appropriate to explain [this verse] in combination with the verse that King David, peace be upon him, stated "Great [deeds] have [You] accomplished, You, Hashem, my G-d, Your wonders and Your thoughts [have been] upon us," etc. It appears to me that apparently one must understand: How is it possible that a Tzaddik performs wonders to cure the sick or free the imprisoned, and other such acts, if, after all, there is nothing new under the sun, or that a Tzaddik innovates secrets of the Torah, how does this come about for the Tzaddik? The matter is as follows: Behold, Hashem, May He be Blessed, His nation and His ministers are light, as it is written, "And G-d said, "Let there be light, and there was light," which signifies that light was created anew there in its place and from there the light is brought down below; and we find that the root remains above. And so the Holy One Blessed be He did with everything He made, the root above and everything made below is through the movement of man moves and shakes the root above that is [then] brought down below. And that is the meaning of, "Great [deeds] have [You] accomplished," meaning that "You, Hashem," have performed and made the many causes and actions, and we find that the root [of these actions] is above, and so, "Your wonders" that we innovate, meaning the cure and the livelihood and every [other] matter, and "Your thoughts," meaning the secrets of the Torah, are "upon us," we are able to do all of them. And this is what the Holy One Blessed be He said to Moshe Rabbeinu, "And you shall command," which is a term of directive related to the influxes of of blessing and mercy, as it is written, "and I have commanded/directed my blessing," etc., and the Holy One Blessed be He said, "And you," the Vav adds to the matter, meaning that you also shall command blessing and influx upon Israel, because everything "commands" and "stands" from the mouth of the Holy One Blessed be He and it imprinted in its source, just that also "you shall command" to shake the supernal root, "and they shall take to you pure olive oil," and the "olive oil" is a hint to the great and pure influx, and the reason is it stated, "to you" when it should have stated "for them," is because the Tzadik, upon seeing that Israel is absorbed in abundance, that gives benefit and pleasure to him, as if the influx was for him, and this is easy to understand.
Noam Elimelekh
And this is [the meaning of], "And you," that the Vav is that which adds to the matter, meaning "you" with all of your qualities mentioned above, "shall command the Children of Israel," in line of what is written in the Talmud, "and Hashem - that is His court," meaning that the Vav is what adds to the matter, and similarly to that is the interpretation here, "and you shall command" for good, for that is what is called a command, in line with what is written in [the holy] books, one commands regarding the good and warns regarding the bad, and if you shall command them with all of your qualities mentioned above, you will accomplish that you all will not come to be led astray by other distractions - not you and not them, and that is, "and they shall bring to you olive oil," meaning all of the repentances and commandments they will do, which is the hint of, "pure olive oil," "crushed for the light," as is found in the holy Alshich's commentary at length, that a person needs to crush and break himself with hardships and abstentions for the service of the Creator may He be blessed, see there, and all of this is even if they perform [the repentances and commandments] in front of you, you all will not come to be led astray by another distraction, G-d forbid, and that is, "and they shall bring to you," which means in front of you, that you see their actions as commanded by you and you all will not turn to any distraction, [performing the deeds] solely for the unification of His Name, may He be blessed, "to light the eternal lamp," which means that your intentions will be only to elevate the holiness and the supernal light which is called, "Lamp," the explanation of "eternal" is that you shall see that the holiness and the supernal light will not move from you forever. And this is the explanation of the verse, "an eternal fire will burn upon the altar," for which the explanation is that the verse is warning that the holiness and the supernal light will remain burning in you so that you will not extinguish it forever, meaning that you shall add light and holiness so that it will not be extinguished forever.