All language is communication. It’s immaterial if Jesus was speaking Hebrew to somebody who was Hebrew, or if He was speaking Greek (through John) to people who understood Greek, its the thoughts and concepts that He is attempting to impart that matter. When John said the number of the beast is ‘666’, that would have meant something to Greek readers. Whether it meant something slightly different to Hebrew readers is theoretically possible I suppose, but as they wouldnt be reading it (not understanding Greek) its kind of irrelevant. It is noticeable however that when Revelation was translated into Latin the number of the beast became ‘616’, which kind of ties the number to the meaning, rather than the meaning to the number, as your Hebrew letter/meaning idea would indicate.
OK, I can swallow that. Understanding is everything. It does have meaning in both Greek and Hebrew symbols which is interesting enough. In Hebrew, you still can read, “in the end, a head will emerge, Satan, that will hook people into sin”. And it has its meaning in Greek as well.
To the Jew first and then to the Gentile. So, why not have meaning for both?