Genesis 38:8

American King James Version (1999)

And Judah said to Onan, Go in to your brother's wife, and marry her, and raise up seed to your brother.

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And the firstborn said to the younger, Our father is old, and there is not a man in the earth to come in to us after the manner of all the earth:

You shall not uncover the nakedness of your brother's wife: it is your brother's nakedness.

And Naomi said, Turn again, my daughters: why will you go with me? are there yet any more sons in my womb, that they may be your husbands?