The Tetragrammaton:

“By arranging the four letters of the Great Name, (I H V H or in Hebrew יהוה), in the form of the Pythagorean Tetractys, the 72 powers of the Great Name of God are manifested.

● = I = 10 = 10
● ● = H I = 5+10 = 15
● ● ● = V H I = 6+5+10 = 21
● ● ● ● = H V H I = 5+6=5+10 = 26
The Great Name of God = 72 " 

~ Manly Palmer Hall