There is difference also between a wife and a virgin. The unmarried woman cares for the things of the Lord, that she may be holy both in body and in spirit: but she that is married cares for the things of the world, how she may please her husband.
All Commentaries on 1 Corinthians 7:34 Go To 1 Corinthians 7
The Apostolic Constitutions
AD 375
Let such a virgin, therefore, be holy in body and soul, as the temple of God,