Now Jewish tradition has it – but for no good reason necessarily, but it is possible – that Eber did not cooperate in the building of the great tower of Babel. As a result – there is no note of this in the Bible – their language was left to them unchanged and from Eber you get Hebrew, and so the Jews used to claim that Hebrew was the original language from Adam.
‘”Joktan” was the father of numerous offspring, all of whom appear to be the founders of Arabic tribes, especially those of Yemen’ (Leupold).