Greek digamma

In ancient times, Greek had a letter "Ϝ" called digamma that disappeared and that had the sound of an English "v" or "w".
Ϝ ϝ Ϛ ς

The Greek digamma corresponds to the English "F" and had an "f" or "v" or "w". As it was not needed for sound value, it disappeared except for it's numeric value of six (6).

Here are some Greek words that originally had a "digamma".

see: «ϝείδε» (vee-the or we-the) became «είδε» (ee-tha) and is related, through Latin, to the English "video".
house: «ϝοικος» (vee-kos or wee-kos) became «οίκος» (ee-kos) and is related to the Old English "wic" or house.
work: «ϝέργα» (ver-ga or wer-ga) became «έργα» (er-ga) and is related to the German "Werk" and English "work".

Some of these (and other) words are detailed below.

Σ σ ς

Unlike the upper case sigma "Σ", the lower case sigma is written differently if it is at the end of a word, as "ς" or not at the end of a word as "σ".

ΧΡΙΣΤΌΣ = χριστός

Hebrew has a number of such letters. Greek has only this one.

What does the "Waltz" from the German "wälzte" have to do with the Greek "αλυσίδα" for "chain"?

The ancient Greek word "Ϝαλύτις" (va-lee'-tis) ≈ "chain" is related to the German "wälzte" for "turn". Both come from the PIE (Proto Indo-European) root having to do with turning.

More: Waltzing out of chains

The original Greek word for house «ϝοικος» (vee-kos or wee-kos) started with a digamma and became «οίκος» (ee-kos) and is related to the Old English "wic" or house as in the "Earl of Sandwich", the Earl of the House of/on Sand.

More: Greek house and village and city

The modern Greek word "ειδή" (ee-THEE) ≈ "see" originally started with a digamma with a "f" or "v" sound and is related to the word "video".

More: John 9:23-25 One thing I know is that I know nothing

The related ancient Greek word "εἴκω" (ee-ko) ≈ "yield, turn" is used in the GNT (Greek New Testament). The older ancient Greek word "Ϝεἴκω" (wee-ko) ≈ "yield, turn" had a leading digamma which had a "w" or "v" sound and is related to the English word "week" (as in a turning or starting over).

More: Seven days without God makes one weak

Revelation 13:18 Here is wisdom. Let him that hath understanding count the number of the beast: for it is the number of a man; and his number is Six hundred threescore and six. [kjv]

ωδε η σοφια εστιν ο εχων νουν ψηφισατω τον αριθμον του θηριου αριθμος γαρ ανθρωπου εστιν και ο αριθμος αυτου εξακοσιοι εξηκονταεξ [gnt]

The Greek Bible has one digamma in it, the one used in the 6 for the number 666 in Revelation 13:8 as the "number of the beast". This appears in the TR (Textus Receptus).
A well-known example of Greek gematria is "χξς" (lowercase) or "ΧΞϜ" (uppercase) which is the number 666 from Revelation 13:18, also known as the "number of the beast".

600 = "χ" = "Χ" (chi)
60 = "ξ" = "Ξ" (xi)
6 = "Ϛ" = "Ϝ" (digamma)

More: Revelation 13:16-18 The mark of an impressive character

More: Hebrew and Greek gematria

Revelation 4:3 And he that sat was to look upon like a jasper and a sardine stone: and there was a rainbow round about the throne, in sight like unto an emerald. [kjv]

και ο καθημενος ομοιος ορασει λιθω ιασπιδι και σαρδιω και ιρις κυκλοθεν του θρονου ομοιος ορασει σμαραγδινω [gnt]

… iris … zmaragdinae [v]

10:1 And I saw another mighty angel come down from heaven, clothed with a cloud: and a rainbow was upon his head, and his face was as it were the sun, and his feet as pillars of fire: [kjv]

και ειδον αλλον αγγελον ισχυρον καταβαινοντα εκ του ουρανου περιβεβλημενον νεφελην και η ιρις επι την κεφαλην αυτου και το προσωπον αυτου ως ο ηλιος και οι ποδες αυτου ως στυλοι πυρος [gnt]

… iris … [v]

The ancient Greek word "ἶρις" ≈ "rainbow, halo". This word appears twice in the GNT, in Revelation, and not in the LXX (Septuagint). The related Latin word "iris" ≈ "rainbow" and is the source of the English word "iridescent" (coined about 1800).

*G2463 *2 ἶρις (ee'-ris) : perhaps from G2046 (as a symbol of the female messenger of the pagan deities); a rainbow ("iris"):--rainbow.

Words: ιρις=2

The ancient Greek word "ἶρις" ≈ "rainbow, halo" and is related to the following words where the Greek originally had a leading digamma letter with "v" or "f" sound, written like an "F" and, through Latin, becoming the English letter "F".

The Latin word "vieo" ≈ "weave".
The English word "wire".
The Middle English word "wyr" ≈ "wire".
The Old English word "wir" ≈ "wire".

More: Orange you going to color it red

Matthew 21:8 And a very great multitude spread their garments in the way; others cut down branches from the trees, and strawed them in the way. [kjv]

ο δε πλειστος οχλος εστρωσαν εαυτων τα ιματια εν τη οδω αλλοι δε εκοπτον κλαδους απο των δενδρων και εστρωννυον εν τη οδω [gnt]

The ancient Greek word "πλεῖστος" ≈ "most, very much, for the most part" and comes from "πολύς" ≈ "many, much" and is the suffix of English words starting with "poly" as in "polynomial".

Does the "very much" or "for the most part" refer to the size of the "crowd" or the part of the "crowd" that "spread" down their "garments"?

More: Matthew 21:1-15 Triumphal entry

The ancient Greek word "οἶνος" ≈ "wine".
The modern Greek word "οίνος" (EE-nos) ≈ "wine" is an older word for "wine" and goes back to ancient times.
The modern Greek word "κρασί" (kra-SEE) ≈ "wine".

The older ancient Greek word "Ϝοῖνος" ≈ "wine" (using the digamma with the "v" sound). The ancient Greek word for "wine" originally had a beginning letter of the digamma «Ϝ» that had the sound of a English "w" or "v" so that «οίνος» was «Ϝοινος» and pronounced more like the English "wine" or the German "Wein" ("v" sound at the beginning).

More: A grape way to whine about wine