Musar su Salmi 16:11

We therefore perceive that the candlestick symbolised the seven emanations which form the בנין, all of which in turn are nourished from a higher source. When the Torah speaks of אל מול פני המנורה יאירו שבעת הנרות, "The seven lamps shall give light opposite the face of the candlestick" (Numbers 8,2), this means that the candlestick in the Tabernacle corresponded to and was "opposite" its counterpart in the Celestial Sanctuary. We view the candlestick as symbolising man. There are three arms or pipes on either side. The lower ones are longer than the middle ones, and the middle ones are longer than the upper ones which are nearer the centre-shaft. The lights all burned on the same level. The centre-shaft represented the גוף, torso or body of the candlestick. Man is like the candlestick. He has three projections on either side of him, the arms, the legs and the ears. The legs are longer than the arms, and the arms are longer than the ears, just as the lower arms of the candlestick were longer than the middle ones and the upper ones, respectively. The overall height of the candlestick was 18 handbreadths, the equivalent of three cubits, the height of an average-sized man from the ground to the shoulder (Tossaphot Shabbat 92).

The "seven pillars that she has hewn" refers to seven categories of righteous people (Sifri Devarim 1,10). These groups occupy different levels in גן עדן, one above the other. Rabbi Shimon ben Yochai comments on Psalms 16:11: שבע שמחות, "full of joys," [i.e. satisfied, from Sova] that the word should be read as שבע, "seven." It would then refer to the seven facets of the various righteous people who would be similar to the moon, the sun, the firmament, the stars, lightning, שושנים, [a reference to the righteous as per Psalms 45,1, see my translation of the Alshich's commentary page 315. Ed.], and the candlestick in the Temple.