Jacob's name was changed to Israel. He had 12 sons. Those 12 sons became the 12 tribes of Israel. But the one son or tribe, that establishes the bloodline of the Messiah is Jacob (Israel's) son Judah.
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Jacob's name was changed to Israel. He had 12 sons. Those 12 sons became the 12 tribes of Israel. But the one son or tribe, that establishes the bloodline of the Messiah is Jacob (Israel's) son Judah.