GOD'S WORD® Translation
A married woman must remain with her husband as long as he lives. If her husband dies, she is free to marry anyone she wishes, but only if the man is a Christian.

American Standard Version
A wife is bound for so long time as her husband liveth; but if the husband be dead, she is free to be married to whom she will; only in the Lord.

Berean Study Bible
A wife is bound to her husband as long as he lives. But if her husband dies, she is free to marry anyone she wishes, as long as he belongs to the Lord.

Douay-Rheims Bible
A woman is bound by the law as long as her husband liveth; but if her husband die, she is at liberty: let her marry to whom she will; only in the Lord.

English Revised Version
A wife is bound for so long time as her husband liveth; but if the husband be dead, she is free to be married to whom she will; only in the Lord.

King James Bible
The wife is bound by the law as long as her husband liveth; but if her husband be dead, she is at liberty to be married to whom she will; only in the Lord.

World English Bible
A wife is bound by law for as long as her husband lives; but if the husband is dead, she is free to be married to whoever she desires, only in the Lord.

Young's Literal Translation
A wife hath been bound by law as long time as her husband may live, and if her husband may sleep, she is free to be married to whom she will -- only in the Lord;

1 Corinthians 7:39 Additional Translations ...