Génesis 38

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.

Y sabiendo Onán que la simiente no había de ser suya, sucedía que cuando entraba á la mujer de su hermano vertía en tierra, por no dar simiente á su hermano.

Onan knew that the offspring wouldn’t be his; and when he went in to his brother’s wife, he spilled his semen on the ground, lest he should give offspring to his brother.