Genesis 38:8

And Judas said to Aunan, Go in to thy brother's wife, and marry her as her brother-in-law, and raise up seed to thy brother.

And Judas said to Aunan, Go in to your brother's wife, and marry her as her brother-in-law, and raise up seed to your brother.

Judah said to Onan, “Go in to your brother’s wife, and perform the duty of a husband’s brother to her, and raise up offspring for your brother.”