וּרְאָיָ֤ה בֶן־שׁוֹבָל֙ הוֹלִ֣יד אֶת־יַ֔חַת וְיַ֣חַת הֹלִ֔יד אֶת־אֲחוּמַ֖י וְאֶת־לָ֑הַד אֵ֖לֶּה מִשְׁפְּח֥וֹת הַצָּֽרְעָתִֽי׃ (ס)
And Reaiah the son of Shobal begot Jahath; and Jahath begot Ahumai, and Lahad. These are the families of the Zorathites.
Read kabbalistic (mystical) interpretation of I Chronicles 4:2: and classical mystical sources.