Parshas Tetzaveh begins with the mitzva to take oil for the Menorah:
וְאַתָּה תְצַוֶּה אֶּת־בְנֵי יִשְרָּאֵל וְיִקְחו אֵלֶּיךָ שֶּמֶּן זַיִת זָּךְ כָּתִית לַמָּאוֹר לְהַעֲלֹת נֵר תָּמִיד.
And you should command Bnei Yisrael, and they shall take to you pure olive oil, crushed for lighting, to kindle the lamps continually. [Shemos 27:20]
A verse in Mishlei says: נֵר השם נִשְמַת אָּדָּם - A candle of Hashem is a man’s soul. [Mishlei 20:27] Which “candle of Hashem” is this verse referring to, and what is its connection to a man’s soul?
The Nesivos Shalom answers with the following remarkable insight: Just like the Menorah in the Mishkan radiated its light and influenced Bnei Yisroel, so too a job of a man is to spread the light of Torah in the world. In the same idea, we are all called mamleches kohanim, because a kohen’s job is to teach and inspire others. [Nesivos Shalom, Tetzave]