Genesis 38:10

⁸And Judah said to Onan, Go in to thy brother’s wife, and marry her as her brother-in-law, and raise up seed to thy brother.

⁹And Onan, knowing that the seed should not be his—it came to pass when he went in to his brother’s wife, that he spilled it upon the ground, so that he should not give seed to his brother’s wife.

— Genesis 38:10 —

¹¹And Judah said to Tamar, his daughter-in-law, Sit thou a widow in the house of thy father-in-law, until Shelah my son be grown; for he said, Lest he also die as his brethren; and Tamar departed, and sat in the house of her father.

¹²And the days were fulfilled, and Shua the wife of Judah died; and Judah, being comforted, went to them that sheared his sheep, himself and Hirah his shepherd the Adullamite, to Timnah.