English Standard Version
If a man takes his brother's wife, it is impurity. He has uncovered his brother's nakedness; they shall be childless.New International Version
"'If a man marries his brother's wife, it is an act of impurity; he has dishonored his brother. They will be childless.Catholic Public Domain Version
Whoever will have married his brother’s wife has done an unlawful thing; he has uncovered his brother’s nakedness. They shall be without children