⁸ Then Judah said to Onan, Go in to thy brother's wife, and fulfil to her the brother-in-law's duty, and raise up seed to thy brother.

³ The sons of Judah: Er, and Onan, and Shelah: [which] three were born to him of the daughter of Shua the Canaanitess. And Er, Judah's firstborn, was wicked in the sight of Jehovah; and he slew him.