Seven virtues
The "Catechism of the Catholic Church" defines virtue as "a habitual and firm disposition to do the good." Traditionally, the seven Christian virtues or heavenly virtues combine the four classical cardinal virtues of prudence, justice, temperance and courage (or fortitude) with the three theological virtues of faith, hope and charity. These were adopted by the Church Fathers as the seven virtues.
Consecrated virgin
The Christian concept has a precedent in the Vestal Virgins of ancient Roman religion. 
Chastity is one of the Seven Virtues in Christian tradition, listed by  Gregory the Great at the end of the 6th century. Praise of chastity or celibacy, both male and female, as a religious virtue is already present in the New Testament, especially in 1 Corinthians, where Paul the Apostle suggests a special role for virgins or unmarried women () as more suitable for "the things of the Lord" ().
In 2 Corinthians 11:2, Paul alludes to the metaphor of the Church as Bride of Christ by addressing the congregation 
"I have espoused you to one husband, that I may present you as a chaste virgin to Christ".
In Christian hagiography, there are numerous accounts of pre-Nicaean virgin martyrs, such as
Margaret of Antioch, Agnes of Rome, Euphemia of Chalcedon and Lucia of Syracuse.