I Chronicles 4:7 Midrash

וּבְנֵ֖י חֶלְאָ֑ה צֶ֥רֶת יצחר [וְצֹ֖חַר] וְאֶתְנָֽן׃

And the sons of Helah were Zereth, and Zohar, and Ethnan.

Read midrashic interpretation of I Chronicles 4:7: and classical rabbinic exegesis.