1 Chronicles 2:3-4

The 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. And Tamar his daughter in law bare him Pharez and Zerah. All the sons of Judah were five.