Genesis 4:25

4:25 And Adam had marital relations ¹  with his wife again, and she gave birth to a son. She named him Seth, saying, “God has given ²  me another child ³  in place of Abel because Cain killed him.”

Genesis 38:9

38:9 But Onan knew that the child ⁴  would not be considered his. ⁵  So whenever ⁶  he had sexual relations with ⁷  his brother’s wife, he withdrew prematurely ⁸  so as not to give his brother a descendant.

[4:25]  ¹ tn Heb “knew,” a frequent euphemism for sexual relations.

[4:25]  ² sn The name Seth probably means something like “placed”; “appointed”; “set”; “granted,” assuming it is actually related to the verb that is used in the sentiment. At any rate, the name שֵׁת (shet) and the verb שָׁת (shat, “to place, to appoint, to set, to grant”) form a wordplay (paronomasia).

[4:25]  ³ tn Heb “offspring.”

[38:9]  ⁴ tn Heb “offspring.”

[38:9]  ⁵ tn Heb “would not be his,” that is, legally speaking. Under the levirate system the child would be legally considered the child of his deceased brother.

[38:9]  ⁶ tn The construction shows that this was a repeated practice and not merely one action.

[38:9]  ⁷ tn Heb “he went to.” This expression is a euphemism for sexual intercourse.

[38:9]  ⁸ tn Heb “he spoiled [his semen] to the ground.” Onan withdrew prematurely and ejaculated on the ground to prevent his brother’s widow from becoming pregnant.