'Unmarried' in the Bible

But I say to the unmarried and to the widows, It is good for them that they remain even as I.

(but if also she shall have been separated, let her remain unmarried, or be reconciled to her husband;) and let not husband leave wife.

But I wish you to be without care. The unmarried cares for the things of the Lord, how he shall please the Lord;

There is a difference between the wife and the virgin. The unmarried cares for the things of the Lord, that she may be holy both in body and spirit; but she that has married cares for the things of the world, how she shall please her husband.