¶ 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.
Berean Study Bible (BSB) - 1 Chronicles 2:3 >The sons of Judah: Er, Onan, and Shelah. These three were born to him by Bath-shua the Canaanite. Er, Judah’s firstborn, was wicked in the sight of the LORD, who put him to death.