GOD'S WORD® Translation
Whoever marries his brother's wife violates his brother's marriage and does an unclean thing. That man and woman will have no children.

American Standard Version
And if a man shall take his brother's wife, it is impurity: he hath uncovered his brother's nakedness; they shall be childless.

Berean Study Bible
If a man marries his brother’s wife, it is an act of impurity. He has uncovered the nakedness of his brother; they shall be childless.

Douay-Rheims Bible
He that marrieth his brother's wife, doth an unlawful thing, he hath uncovered his brother's nakedness: they shall be without children.

English Revised Version
And if a man shall take his brother's wife, it is impurity: he hath uncovered his brother's nakedness; they shall be childless.

King James Bible
And if a man shall take his brother's wife, it is an unclean thing: he hath uncovered his brother's nakedness; they shall be childless.

World English Bible
"'If a man takes his brother's wife, it is an impurity: he has uncovered his brother's nakedness; they shall be childless.

Young's Literal Translation
And a man who taketh his brother's wife -- it is impurity; the nakedness of his brother he hath uncovered; childless they are.

Leviticus 20:21 Additional Translations ...