In the following article, The Greek Origin of the Bible & Civilization, I provide evidence as to the Hellenic origin of the alphabet/written word. Here is an excerpt from that article:

Many things came out of Hellas that we have been led to believe came out of Egypt, or the Middle East. One of the most important things that was created by the Hellenes was the alphabet, which combined with math and geometry (also Hellenic in origin), led to Gematria. I explain this in the article hyperlinked in the opening paragraph.

The Hellenes were writing on stone long before the Egyptians, or Sumerians. The Sumerian tablets consist of images that resemble pictograms, not an advanced form of writing, or alphabet: it looks like something a three-year-old could put together in a few minutes.

Here are two videos from a Greek woman who provides evidence that supports my assertion. I have now included them in the article hyperlinked in the opening paragraph of this post.