It is good for them - It may be advisable, in the present circumstances of persecution and distress, not to be encumbered with the cares and anxieties of a family; see 1 Corinthians 7:26, 1 Corinthians 7:32-34. The word unmarried (ἀγάμοις agamois) may refer either to those who had never been married, or to widowers. It here means simply those who were at that time unmarried, and his reasoning applies to both classes.
And to widows - The apostle specifies these, though he had not specified “widowers” particularly. The reason of this distinction seems to be, that he considers more particularly the case of those females who had never been married, in the close of the chapter, 1 Corinthians 7:25.
That they abide - That they remain, in the present circumstances, unmarried; see 1 Corinthians 7:26.