1 Corinthians 7:28 But and if thou marry, thou hast not sinned; and if a virgin marry, she hath not sinned. Nevertheless such shall have trouble in the flesh: but I spare you.
Paul is saying here it is that is ok for divorced people, who are divorced for biblical reasons, and virgins to marry. It was God’s plan for men and women to marry. The trouble he talks about here is the conflicts and demands that two people being joined together will have compared to a person that stays single. It is natural for a husband and wife to have disagreements but they also work them out together. A single person does not have to worry about another person telling them what to do but they have to make sure they are in the Lord’s will in what they do.