And they are all fiery flames, and about them it is stated: (Deut. 4:24) For Ha-Shem your God is a devouring fire...
They are seven from these ten, and they correspond to the seven firmaments. And they are seven sephirot. And between each and every one – 500 years.cxlivSee BT Pesaḥim 94b
And so is the breadth of each-and-every firmament, 500 years, such that it all adds up to a ‘specific measure’, – which is one point – to a specific amount.
There are nine points to every side, which are included in the point of its central empty space∞ḥalal. And because of it is stated: (Ex. 31:14)... its profaners∞meḥale-leha shall surely die... etc.