What is the meaning of 1 Corinthians 7:14?

* The two F.O.G. Bibles & Commentary below are currently a work in progress.

For the unbelieving husband is sanctified through his believing wife, and the unbelieving wife is sanctified through her believing husband. Otherwise your children would be unclean, but now they are holy.

Berean Standard Bible (BSB)

For the unbelieving husband is sanctified in the wife, and the unbelieving wife is sanctified in the husband. Otherwise your children would be unclean, but now they are holy.

World English Bible (WEB)

For{G1063} the unbelieving{G571} husband{G435} is sanctified{G37}{(G5769)} by{G1722} the wife{G1135}, and{G2532} the unbelieving{G571} wife{G1135} is sanctified{G37}{(G5769)} by{G1722} the husband{G435}: else{G686}{G1893} were{G2076}{(G5748)} your{G5216} children{G5043} unclean{G169}; but{G1161} now{G3568} are they{G2076}{(G5748)} holy{G40}.

Strong's King James

(14) For the unbelieving husband is made holy in his wife and the unbelieving wife is made holy in the brother because otherwise your children are unclean but now they are holy.

The F.O.G*

[14] For the unbelieving husband has been sanctified through his wife, and the unbelieving wife through her believing husband. Otherwise your children would be spiritually unclean, but as it is, they're set apart within the sphere of God's covenant blessing.

The F.O.G Paraphrase

for the unbelieving husband hath been sanctified in the wife, and the unbelieving wife hath been sanctified in the husband; otherwise your children are unclean, but now they are holy.

Young's Literal Translation