Then she conceived again and gave birth to a son and named him Onan.

Then Judah told Onan, “Go in to your brother’s widow, and perform your duty as a brother-in-law [under the levirate marriage custom]; [be her husband and] raise children for [the name of] your brother.”

Onan knew that the child (heir) would not be his [but his dead brother’s]; so whenever he lay with his brother’s widow, he spilled his seed on the ground [to prevent conception], so that he would not give a child to his brother.

The sons of Judah: Er, Onan, Shelah, Perez, and Zerah—but Er and Onan died in the land of Canaan. And the sons of Perez were Hezron and Hamul.

The sons of Judah were Er and Onan, but Er and Onan [were judged by God and] died in the land of Canaan.

The sons of Judah: Er, Onan, and Shelah; the three were born to him by Shua’s daughter the Canaanitess. Er, Judah’s eldest, was evil in the Lord’s sight, and He put him to death.