For the unbelieving husband is sanctified by the wife, and the unbelieving wife is sanctified by the husband: else were your children unclean; but now are they holy.
All Commentaries on 1 Corinthians 7:14 Go To 1 Corinthians 7
Cyprian of Carthage
AD 258
So both the virgin and the unmarried woman consider those things which are the Lord's, that they may be holy both in body and spirit."