Genèse 38:9

9 Onan, sachant que cette postérité ne serait pas à lui, se souillait à terre lorsqu'il allait vers la femme de son frère, afin de ne pas donner de postérité à son frère.

Genèse 38:9 Meaning and Commentary

Genesis 38:9

And Onan knew that the seed should not be his
Should not be called a son of his, but a son of his brother Er; this is to be understood only of the firstborn; all the rest of the children born afterwards were reckoned the children of the real parent of them; this shows this was a custom in use in those times, and well known, and was not a peculiar case: and it came to pass, when he went in unto his brother's wife;
to cohabit with her, as man and wife, he having married her according to his father's direction: that he spilled [it] on the ground, lest he should give his seed to
his brother:
lest his brother's wife he had married should conceive by him, and bear a son that should be called his brother's, and inherit his estate; and this is the sin, which from him is called Onania, a sin condemned by the light of nature, as well as by the word of God, and very prejudicial to mankind, as well as displeasing to God, as follows:

Genèse 38:9 In-Context

7 Er, premier-né de Juda, était méchant aux yeux de l'Eternel; et l'Eternel le fit mourir.
8 Alors Juda dit à Onan: Va vers la femme de ton frère, prends-la, comme beau-frère, et suscite une postérité à ton frère.
9 Onan, sachant que cette postérité ne serait pas à lui, se souillait à terre lorsqu'il allait vers la femme de son frère, afin de ne pas donner de postérité à son frère.
10 Ce qu'il faisait déplut à l'Eternel, qui le fit aussi mourir.
11 Alors Juda dit à Tamar, sa belle-fille: Demeure veuve dans la maison de ton père, jusqu'à ce que Schéla, mon fils, soit grand. Il parlait ainsi dans la crainte que Schéla ne mourût comme ses frères. Tamar s'en alla, et elle habita dans la maison de son père.
The Louis Segond 1910 is in the public domain.