It is written, “And ye shall take you on the first day the fruit of goodly trees, branches of palm-trees, and boughs of thick trees, and willows of the brook” (Leviticus 23:40).
And we should interpret “fruit of goodly trees”: A tree is considered righteous, called “tree of the field.” “Fruit” is the progeny of the tree, meaning the progeny of the righteous, which are the good deeds, which should be in the form of adornment in his tree.
“From year to year” means a whole year, which are “six months with oil of myrrh, and six months with sweet odors.” The wicked, however, are “like the chaff which the wind driveth away.”
“Branches of palm-trees” are two spoons, which are the two Heys, the first Hey and the last Hey, by which one is awarded “one golden pan of ten shekels, full of incense.”
The spoons mean coercion, that one assumes the Kingdom of Heaven coercively. This means that despite reason’s disagreement, one goes above reason. This is called “coercive mating.” Tmarim (palm-trees) comes from the word Morah (fear), which is fear (by way of “and God hath so made it, that men should fear before Him”).
And because of that it is called Lulav (palm branch). This means that before one is rewarded, he has two hearts. And this is called Lo Lev (no heart), meaning that the heart is not devoted solely to the Creator. And when he is rewarded with the discernment of Lo (to Him), meaning a heart to the Creator, this is the Lulav.
Also, one should say, “When will my actions reach the actions of my fathers?” Through it, one is rewarded with being a branch of the holy patriarchs, and this is the meaning of “boughs of thick trees,” which are the three myrtles.
Yet, at the same time one should be in the form of “willows of the brook,” tasteless and scentless. And one should delight in this work, even though he feels no flavor or fragrance in this work. And then this work is called “the letters of Thy Unified Name,” by which we are awarded complete unification with the Creator.