Genesis 38:8

וַיֹּ֤אמֶר יְהוּדָה֙ לְאוֹנָ֔ן בֹּ֛א אֶל־אֵ֥שֶׁת אָחִ֖יךָ וְיַבֵּ֣ם אֹתָ֑הּ וְהָקֵ֥ם זֶ֖רַע לְאָחִֽיךָ׃

εῖπεν δὲ Ἰούδας τῷ Αύνάν Εἲσελθε πρὸς τὴν γυναῖκα τοῦ ἀδελφοῦ σου καὶ γάμβρευσαι αὐτήν, καὶ ἀνάστησον σπέρμα τῷ ἀδελφῷ σου.

Greek text from Swete's edition, CC BY-SA 4.0

Entonces Judá dijo á Onán: Entra á la mujer de tu hermano, y despósate con ella, y suscita simiente á tu hermano.

Then Judah said to Onan, “Sleep with your brother ’s wife. Perform your duty as her brother-in-law and raise up offspring for your brother.”