Verse Comparison: Genesis 38:9
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.
Amplified® Bible
But Onan knew that the family would not be his, so when he cohabited with his brother's widow, he prevented conception, lest he should raise up a child for his brother.
Darby English Version
But when Onan knew that the seed should not be his own, it came to pass when he went in to his brother's wife, that he spilled [it] on the ground, in order to give no seed to 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.
Revised Standard Version
But Onan knew that the offspring would not be his; so when he went in to his brother's wife he spilled the semen on the ground, lest he should give offspring to his brother.
Young's Literal Translation
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;