Here is highlighted the difference between the married and the single woman. The unmarried woman is able to better devote her time to the service of the Lord whereas the married woman has to tend to the needs of her husband. William MacDonald observed well, “The expression “that she may be holy both in body and in spirit” does not mean that the unmarried state is more holy, but simply that she can be more set apart in both body and spirit to the work of the Lord. She is not essentially purer, but her time is freer.”