1 Corinthians 7:25
Now concerning virgins I have no commandment of the Lord: yet I give my judgment, as one that hath obtained mercy of the Lord to be faithful.
Note 1 at 1Co 7:25: The word "virgins" or "virgin" is used five times in this chapter (1Co 7:25, 28, 34, and 36-37). In each instance, this was translated from the Greek word "PARTHENOS," and it means "a maiden; by implication, an unmarried daughter" (Strong's Concordance). However, the dictionary defines "virgin" as "a person who has not experienced sexual intercourse" (American Heritage Dictionary).
The context of this verse suggests that the word "virgin" is referring to both males and females who have never had physical relations. The next verse (1Co 7:26) says that it is good for a man to be this way (a virgin). 1Co 7:27-28, 32-33, and 36-38 all speak to males about this subject of virginity. Therefore, 1Co 7:25-40 is talking about the virtues of remaining single, whether male or female.
Widows or widowers would also fit into this category even though they had previously had sexual intercourse. Paul would have them consider the virtues of remaining single.