Genesis 38:9
Berean Standard Bible
But Onan knew that the offspring would not belong to him; so whenever he would sleep with his brother’s wife, he would spill his seed on the ground so that he would not produce offspring for his brother.
King James Version
And Onan knew that the seed should not be his; and it came to pass, when he went in unto his brother's wife, that he spilled it on the ground, lest that he should give seed to his brother.
World English Bible
Onan knew that the offspring wouldn’t be his; and when he went in to his brother’s wife, he spilled it on the ground, lest he should give offspring to his brother.
American Standard Version
And Onan knew that the seed would not be his; and it came to pass, when he went in unto his brother's wife, that he spilled it on the ground, lest he should give seed to his brother.