Then Judah said to Onan, Go in to your brother's wife and do what it is right for a husband's brother to do; make her your wife and get offspring for your brother.
But Naomi said, Go back, my daughters; why will you come with me? Have I more sons in my body, to become your husbands?
You may not have sex relations with your brother's wife, for she is your brother's.
And the older daughter said to her sister, Our father is old, and there is no man to be a husband to us in the natural way: