And they are 7, corresponding to the 7 days of Creation, which allude to ‘the 7 Names of A-V-G-Y-T-Tz’ etc. And upon them it is stated: (Is. 6:2) Seraphs standing above it, six wings, six wings to each one, through which prayer flies upwards.
And there are, to be found there, 42, corresponding to the 42 mentions of HVYH which are in the tephilin (phylacteries) of the hand, and the tephilin of the head. And upon them it is stated:xlviiiSee BT Berakhot 6a (Deut. 28:10) And all the peoples of the land shall see, that the Name of Y”Y... etc.