Ge'ez language
The South Arabic alphabet used in Yemen, Eritrea, Djibouti, and Ethiopia beginning in the 8th century BC, in all three locations, later evolved into the Ge'ez alphabet. The Ge'ez language however is no longer considered to be a descendant of Sabaean, or of Old South Arabian; and there is linguistic evidence that Semitic languages were in use and being spoken in Eritrea and Ethiopia as early as 2000 BC.