Sukkot Teaching and Insights.
Etrog — because it is written (Psalms 104: 1): ‘You are clothed in glory and majesty.’ (The word translated as majesty is hadar. In the Torah (Leviticus 23:40), the etrog is called the fruit of the goodly tree. The same Hebrew word, hadar, is used in that context to mean goodly.)
Palm — because it is written (Psalms 92:13): ‘The righteous bloom like a date palm.’
Myrtle — because it is written (Zechariah 1:8): ‘And he stood among the myrtle-trees.’
Willow — because it is written (Psalms 68:5): ‘Extol Him who rides on the clouds [aravot], the Lord is His name.’
Species as Limbs
Each of the four relates to a particular limb through which man is to serve God (cf. Sefer ha-Hinukh, #285):
Etrog refers to the heart, the place of understanding and wisdom.
Palm refers to the backbone, uprightness.
Myrtle corresponds to the eyes, enlightenment.
Willow represents the lips, the service of the lips (prayer).
Taste and Fragrance
Taste represents learning. Smell represents good deeds. The etrog has both taste and smell. The lulav has taste but not fragrance. The myrtle has smell but no taste. And the willow has neither. Each represents a different type of man. Some have both learning and good deeds; some have one without the other; and some have neither. Real community is found in their being bound together and brought under one roof.
Symbolism of Waving the Four Species
The motion and order of the waving’s is highly significant.
Through all of these, the themes of Sukkot are played out and interwoven beautifully: redemption, universal peace and brotherhood, completion.