וּרְאָיָ֤ה בֶן־שׁוֹבָל֙ הוֹלִ֣יד אֶת־יַ֔חַת וְיַ֣חַת הֹלִ֔יד אֶת־אֲחוּמַ֖י וְאֶת־לָ֑הַד אֵ֖לֶּה מִשְׁפְּח֥וֹת הַצָּֽרְעָתִֽי׃ (ס)
소발의 아들 르아야는 야핫을 낳았고 야핫은 아후매와 라핫을 낳았으니 이는 소라 사람의 족속이며
Rashi
And Reaiah This is the manner in which this genealogy [is written]; although Reaiah, [and his father] were not enumerated above, [he is mentioned here] because the Chronicler reckons [only] certain generations. Likewise, (vs. 7f.): “And the sons of Helah: Zereth, and Zohar, and Ethnan. And Koz begot...” Although he did not yet mention Koz, he mentions his sons.