This personal name appears in a textually difficult genealogical passage concerning the family of Etam in Judah's lineage. The Masoretic Text's syntax is ambiguous, and the Septuagint interprets these as sons of Aitan rather than following the Hebrew as it stands. Some manuscripts suggest emendations that would clarify Yidvash's genealogical position. The name may derive from a root meaning 'honey' or 'sweetness,' though this remains speculative.