Judah in Wikipedia

Judah/Yehuda (Hebrew: יְהוּדָה, Standard Yəhuda Tiberian Yəhûḏāh) was, according to the Book of Genesis, the fourth son of Jacob and Leah, and the founder of the Israelite Tribe of Judah; however some Biblical scholars view this as postdiction, an eponymous metaphor providing an aetiology of the connectedness of the tribe to others in the Israelite confederation.[1] With Leah as a matriarch, Biblical scholars think the text's authors believed the tribe was part of the original Israelite confederation; however, it is worthy of note[2] that the tribe of Judah was not purely Israelite, but contained a large admixture of non- Israelites, with a number of Kenizzite groups, the Jerahmeelites, and the Kenites, merging into the tribe at various points.[3] The text of the Torah argues that the name of Judah, meaning to praise, refers to Leah's intent to praise Yahweh, on account of having achieved four children, and derived from odeh, meaning I will give praise. In classical rabbinical literature, the name is interpreted as a combination of Yahweh and a dalet (the letter d); in Gematria, the dalet has the numerical value 4, which these rabbinical sources argue refers to Judah being Jacob's fourth son.[4]...

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