King James Version
And if a man take a wife and her mother, it is wickedness: they shall be burnt with fire, both he and they; that there be no wickedness among you.English Standard Version
If a man takes a woman and her mother also, it is depravity; he and they shall be burned with fire, that there may be no depravity among you.New International Version
"'If a man marries both a woman and her mother, it is wicked. Both he and they must be burned in the fire, so that no wickedness will be among you.