The ancient Hebrew alphabet is similar to the archaic Phoenician that came from an inscription of the 10 Th century BC.
Since the language and the Aramaean writing extended to Persia empire. The Hebrews adopted this writing and that's way it reached the actual Hebrew; the square Hebrew called Assyrian writing by Israilitish doctors. Since Hebrew become a dead language the necessity of preserve and assure the Knowledge the write pronunciation and the ritual modulation of the biblical texts. It guided to the creation of an extremely complex accent system.