The Symbolism of the Four Species

(12) Another explanation: "The fruit of a beautiful tree" - these are [referring to] Israel. Just like this citron (etrog), which has taste and has smell, so too Israel has among them people that have Torah and have good deeds. "The branches of a date palm" - these are [referring to] Israel. Just like this date, which has taste and has no smell, so too Israel has among them those that have Torah but do not have good deeds. "And a branch of a braided tree (a myrtle)" - these are [referring to] Israel. Just like this myrtle, which has smell and has no taste, so too Israel has among them those that have good deeds but do not have Torah. "And brook willows" - these are [referring to] Israel. Just like this willow, which has no smell and has no taste, so too Israel has among them people that have no Torah and have no good deeds. And what does the Holy One, blessed be He, do to them? To destroy them is impossible, but rather the Holy One, blessed be He, said "bind them all together [into] one grouping and these will atone for those." And if you will have done that, I will be elevated at that time. This is [the meaning of] what is written (Amos 9:6), "He Who built the upper chambers in the heavens" (indicating his elevation). And when is He elevated? When they make one grouping, as it is stated (Ibid.), "and established His grouping on the earth." Hence Moshe warned Israel, "And you shall take for yourselves on the first day."

(14) Rabbi Mani opened, "'All of my bones shall say, "Lord, who is like you"' (Psalms 35:10). This verse was only stated for the sake of the lulav (the four species). The spine of the palm branch is similar to the spine of man. And the myrtle is similar to the eye. And the willow is similar to the mouth. And the etrog (citron), is similar to the heart. David said, 'In all of the limbs, there are no greater ones than these, as they are compared to the entire body.' This is [what is meant] by 'All of my bones shall say.'"