Judah was the fourth son of Jacob and Leah, and one of the twelve sons of Jacob, his name in Hebrew is Yehudah, meaning praise. Judah is one of the more significant figures in the Bible. The important tribe of Judah is named after the patriarch Judah, since King David, and ultimately Jesus the Messiah, came from this tribe.
In the well-known study relating to the selling of Joseph into slavery because of the anger of the brothers against Joseph and their decision to kill him. Judah intercedes and convinces them to sell Joseph to some traders who were passing through, which enabled him to become a leader in Egypt.
In addition to this event regarding Joseph, Judah is also known because of his involvement regarding Tamar. According to custom, when a man died, the woman was to be married to a brother of the brother who died (later known as the levirate law). After two of Judah's sons died, it was custom for the third son then to marry Tamar and bear a child for the deceased son. Tamar attempted to avoid this custom and dressed as a prostitute and tricked Judah to have sex with her, which resulted in her giving birth to two sons, Perez and Zerah, which then continued the line of Judah, from which the Messiah came.