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3The sons of Judah; Er, and Onan, and Shelah: which three were born unto him of the daughter of Shua the Canaanitess. And Er, the firstborn of Judah, was evil in the sight of the LORD; and he slew him. 4And Tamar his daughter in law bare him Pharez and Zerah. All the sons of Judah were five.
1 Chronicles 2:3-4 (KJV)