The Sefirot in the Kabbalistic Tree of Life are arranged in three columns.
Justice demands both stern judgement and love.
The 4 kinds constituting the lulav assembly have seven units in all, corresponding with the 7 lower Sefirot. There are 3 twigs of myrtle, the leaves of which are shaped like eyes. The 3 twigs of myrtle may also represent the 2 arms and trunk of the human body. The etrog is malchut, and the heart. To this number we add the 4 species constituting the assembly to give 72 i.e. the num.e.