The “Ox Circuit” alphabet of the writing system holy to God had (has) 21 letters.
The change to the addition of the Aleph at the beginning of the alphabet as well as leaving the Tau at the end should not be thought of as a “corruption” of the original. More on this later but for now consider the 22 letters in modern Hebrew (not counting letter variants).
Below are Hebrew letter number values.
The 21 letters in the original form of the alphabet circuit are important to remember. Observe the profound meaning exposed in Exodus 3:14 (The Exodus “PI” π verse) in light of the “circuit” origin of Hebrew letters along with the numeric quality of the modern.
And God said unto Moses, I AM THAT I AM: and he said, Thus shalt thou say unto the children of Israel, I AM hath sent me unto you. Exodus 3.14
(אֶֽהְיֶה (From the Masoretic text) Aleph  + He  + Yod + He – Ehyeh, I AM) = 21
The number 21 is known as a “Triangular” number since it is the sum of all the digits up to and including six: 21 = 1 + 2 + 3 + 4 + 5 + 6 = T(6).
The Number 21 is the sixth triangular number T(6).
The number 6 is the third triangular number:
6 = 1 + 2 + 3 = T(3)
The number 3 is the second triangular number:
3 = 1 + 2 = T(2).
This makes 21 a triple triangular number:
21 = T(T(T(2)))
John 8:58 Jesus said unto them, Verily, verily, I say unto you, Before Abraham was, I Am.
The Greek tau (T) corresponds to the Phoenician tau and Hebrew tav. When they are placed in the orientation depicted below, the top ‘T’ represents the idea of the letter circuit with its original tau at the head. The two ‘T’s below turned away from each other represent the beginning and ending tau of the “opened” letter circuit.
This symbol also depicts the triple triangular number explained above.
Those following the Nachash would value the hidden meaning of the Triple Tau considering that the sixth triangular number (21) is a symbol for God, (I AM).
Gen 3:4-5 And the serpent said unto the woman, Ye shall not surely die: For God doth know that in the day ye eat thereof, then your eyes shall be opened, and ye shall be as gods, knowing good and evil.
Becoming god-like is the meaning behind the extensively used Freemasonic “Triple Tau” symbol as well as the Masonic practice of using the second triangular number (3 dots) for abbreviations, instead of the usual period dot.
The 2nd triangular number (3 dots in a triangle) symbolizes the elite Freemason’s perceived evolution towards this goal.
Royal Arch Masons wear the triple tau symbol on their aprons. Adam and Eve attempted to cover themselves after the presence of God left them. In light of the meaning of the triple tau, the symbol is a blasphemous substitute.
Psa 90:2 Before the mountains were brought forth, or ever thou hadst formed the earth and the world, even from everlasting to everlasting, thou art God.
The circuit form of the letters reflects God in this way.
God was also manifest on earth. He was Emanuel (God with us).
Jhn 14:9 Jesus saith unto him, Have I been so long time with you, and yet hast thou not known me, Philip? he that hath seen me hath seen the Father; and how sayest thou then, Shew us the Father?
Jhn 14:10 Believest thou not that I am in the Father, and the Father in me? the words that I speak unto you I speak not of myself: but the Father that dwelleth in me, he doeth the works.
Jhn 14:11 Believe me that I am in the Father, and the Father in me: or else believe me for the very works’ sake.
Jhn 14:12 Verily, verily, I say unto you, He that believeth on me, the works that I do shall he do also; and greater works than these shall he do; because I go unto my Father.
Jhn 14:13 And whatsoever ye shall ask in my name, that will I do, that the Father may be glorified in the Son.
Christ, as a man was born on earth and suffered death. By humbling Himself to exist with men He made possible immortality for all through His resurrection. As God, He is eternal without beginning or end. The quotation below reveals the profundity of the beginning and ending aspect of the letter circuit.
Rev 21:6 And he said unto me, It is done. I am Alpha and Omega, the beginning and the end. I will give unto him that is athirst of the fountain of the water of life freely.
Notice the number of the chapter and verse. 21 is the triple triangular number that signifies the letter value of the Hebrew word that God used to identify Himself. 21 is also the 6th triangular number.
Indeed, the concept of the circuit of 21 letters (eternal God) and the linear of 22 (finite man) complement each other.