וַֽיְהִ֥י מוֹשָׁבָ֖ם מִמֵּשָׁ֑א בֹּאֲכָ֥ה סְפָ֖רָה הַ֥ר הַקֶּֽדֶם׃
And their dwelling was from Mesha, as thou goest toward Sephar, unto the mountain of the east.
Read kabbalistic (mystical) interpretation of Genesis 10:30: and classical mystical sources.