1 Chronicles 1:39 lists the sons of Lotan—Hori and Homam—and notes that Timna was Lotan’s sister. This verse is part of a genealogical record, showing family relationships among the descendants of Esau.
The book of 1 Chronicles opens with genealogies, and this verse is part of a section tracing the family lines of Edom, the descendants of Esau. The writer is recording these names to preserve the history of Israel’s neighboring peoples. Mentioning Timna as Lotan’s sister is unusual in ancient genealogies, which typically focus on male descendants, and may highlight her later significance in the biblical story.