Sons of Cush was applied to tracts of country on both sides of the Red Sea, in the Arabian Peninsula (Yemen) and Northeast Africa.
Sabthecha is the Son of Cush of whom is the Son of Ham of whom is the Son of Nuh (AS)
And the Sab being the Brother of Samaale probably derives from Sabthecha the great-grandson of Nuh(AS).
Ethiopians/Eritreans come from the same lineage and splits off at Cush.
Explorer James Bruce, who visited the Ethiopian Highlands c. 1770, wrote of "a tradition among the Abyssinians, which they say they have had since time immemorial", that in the days after the Deluge, Cush, the son of Ham, traveled with his family up the Nile until they reached the Atbara plain, then still uninhabited, from where they could see the Ethiopian table-land. There they ascended and built Axum, and sometime later returned to the lowland, building Meroë.
Further, the great obelisk of Axum was said to have been erected by Cush in order to mark his allotted territory, and his son Ityopp'is was said to have been buried there, according to the Book of Aksum, which Bruce asserts was revered throughout Abyssinia equally with the Kebra Nagast.
And Sabthecha, the brother of Ityopp’is, split off from his family to have his own civilization and land for his descendants that was eventually came to be known as the Land of Punt or otherwise known by the Greeks as Macrobia. Which traded with nations on the Red Sea, Middle East and Mediterranean Sea.
