In symbols, Θ, alternatively "" or hieroglyph "", pronounced “theta” (Greek), behind the ‘th-’ sound in English words, e.g. think, thought, theos, theology, and thermodynamics, is the 9th letter of the Greek alphabet (1000BC), the value nine symbolic of the Egyptian Ennead (2600BC), the nine god family of the Heliopolis creation myth, the symbol itself representative of the sun god, known as Helios (750BC) to the Greeks, or a variety of sun god motifs to the ancient Egyptians, such as Ra, Horus (4000BC), Ptah (2800BC), Amen (2000BC), or Aten (1300BC), and their corresponding cosmic-scale dramas of the yearly and nightly battle of light (e.g. Ra or Horus vs darkness (e.g. Set or Apep), and the restoration of truth (e.g. Thoth), justice and morality (e.g. Maat); the symbol in the middle of the circle being either the snake Apep or the symbol of the compass (e.g. lodestone called the "bone of Horus" by the Egyptians) pointing to the north star (having something to do with the Orion constellation).
The following are the main points of conjectural meaning behind the theta or sun god symbol:
- Solar symbol [sun god]: The character symbol of theta "" derived from the Egyptian sun god symbol "" or hieroglyph "", or "eye" of god "" (Philo, 110AD), or magnet ‘⊕’ (or ⊗) of Horus (or north start pointing arm of the Orion constellation).
- Ninth letter [god family]: Theta is the 9th letter of the Greek alphabet, the value "9" symbolic of the Egyptian Ennead (Porphyry, 280AD).
- Isopsephy [mathematics]: the word "theta" itself has an isopsephy value of "318" which is the radius of a circle having a circumference of "1000", which equates to the "monad" in Pythagorean mathematics, considered symbolic of the "nous" or mind of god; which is based on the Egyptian Nun or origin of things.
- Sun + snake [good vs evil]: the outer or inner part of the theta symbol, is said to be iconic or representative of the evil snake "Apep" (Lydus, 555AD), aka Set in some versions (or the Satan, in the Roman recension), that does battle with the sun, in the form of the Ra or Horus (or Jesus, in the Roman recension), depending on version; at the end of which "light" always wins out over "darkness".
- Cosmos / world soul [morality / justice]: in early versions of the creation myth, "morality" and cosmic justice (aka Maat) was born at the same time as was "truth" and knowledge (aka Thoth) concordant with the birth of the sun; in this myth, the bennu, the bird that carried the sun into the sky, was said to be the "soul of Ra" (aka soul of the sun); hence, hence, amid the Roman recension, theta came to be seen as the cosmos, world, or soul of the world.
Theta | 318
a gematria value of “318”, code for both the Greek sun god Helios and the diameter of circle with a circumference of a 1000; the number of a thousand, supposedly, representative, in Greek fractional mathematics, of the monad, nous, or Nun, in Pythagoreanism.
The following are quotes:
- “In Old Hebrew and Phoenician as the letter tet ‘⊕’, also known as the ‘compass’, is part of all early alphabets, including Mayan, Chinese, Linear A & B, Etruscan, and the Indus Valley scripts. It also appears on early rock paintings all over the world. The tet became the Greek theta, originally written ⊕ (now θ). Theta is the first letter of god: theos [see: theology], and his throne or thronos.”
- — Esther Stein (2018), The Visible Kingdom of God: the Song of Noah 
- Stein, Esther. (2018). The Visible Kingdom of God: the Song of Noah (pgs. #-#). Balboa Press.