And the mystery of the lulav is: (Ps. 92:13) The righteous shall flourish like a palm... And this is: (1 Chron. 29:11)... for everything∞khol (Yesod) in the heavens and earth... And Onqelos translated this as: ‘grasping heaven and earth.’
And one is required to wave the lulav 18∞ḥaiy wavings – through six directions – which are: ‘the sealing [Var. sealed] [Var. formed] of the East with Y-Q-V etc.’ – six HVYHs, in which there are eighteen letters, and all are alluded to in ‘The Book of Formation’,lxxiiiSepher Yetzirah 1:13 in six sides.