Theta is the eighth letter of the Greek alphabet, derived from the Phoenician letter Teth 𐤈. In the system of Greek numerals, it has a value of 9.
θ (θάνατος, death) in a mosaic
The Phoenician alphabet is an abjad that was used across the Mediterranean civilization of Phoenicia for most of the 1st millennium BC. It was one of the first alphabets, attested in Canaanite and Ara
Theta
…Theta (uppercase Θ or ϴ; lowercase θ; cursive ϑ) is the eighth letter of the Greek alphabet, derived from the Phoenician letter Teth 𐤈. In the system of Greek numerals, it has a value of 9. In Ancient Greek, θ originally represented the aspirated voiceless dental plosive IPA…
Study of Phoenician medals, by Jean-Jacques Barthélemy
Photograph of section of the Zayit Stone, 10th century BC: (right-to-left) the letters waw, he, het, zayin, tet (𐤅𐤄𐤇𐤆𐤈)
Phoenician alphabet, deciphered by Jean-Jacques Barthélemy in 1758. No.1 is from the Cippi of Melqart, No.2 is from the coins, and No. 3 is from the Pococke Kition inscriptions.
A page from the Samaritan version of Leviticus