Bible Verses About Onan

She conceived again and had a son, and she called him Onan.

Y'hudah said to Onan, "Go and sleep with your brother's wife - perform the duty of a husband's brother to her, and preserve your brother's line of descent."

However, Onan knew that the child would not count as his; so whenever he had intercourse with his brother's wife, he spilled the semen on the ground, so as not to give his brother offspring.

What he did was evil from ADONAI's perspective, so he killed him too.

The sons of Y'hudah: 'Er, Onan, Shelah, Peretz and Zerach; but 'Er and Onan died in the land of Kena'an. The sons of Peretz were Hetzron and Hamul.

The sons of Y'hudah: First 'Er and Onan, but 'Er and Onan died in the land of Kena'an.

The sons of Y'hudah: 'Er, Onan and Shelah; the mother of these three was Bat-Shua the Kena'anit. 'Er, Y'hudah's firstborn, was wicked from ADONAI's perspective, so he killed him.