Genesis 10:29 Kabbalah

וְאֶת־אוֹפִ֥ר וְאֶת־חֲוִילָ֖ה וְאֶת־יוֹבָ֑ב כָּל־אֵ֖לֶּה בְּנֵ֥י יָקְטָֽן׃

and Ophir, and Havilah, and Jobab; all these were the sons of Joktan.

Read kabbalistic (mystical) interpretation of Genesis 10:29: and classical mystical sources.