But and if thou marry, thou hast not sinned; and if a virgin marry, she hath not sinned.
1 Corinthians 7:28a

Qualifications for a woman to marry:

She must be unmarried. The Greek word for unmarried woman, parthenos, is translated here as virgin.

Qualifications for a man to marry:

None. This verse does not restrict men, married or single, from marrying.