⁹ But Onan was not willing to have a child who would not be his own heir. So whenever he had intercourse with his brother's wife, he spilled the semen on the ground. This prevented her from having a child who would belong to his brother.

⁹ and Onan knoweth that the seed is not 'reckoned' his; and it hath come to pass, if he hath gone in unto his brother's wife, that he hath destroyed 'it' to the earth, so as not to give seed to his brother;