Concerning the Unmarried

25 Now about virgins: I have no command from the Lord, but I give a judgment as one who by the Lord’s mercy is trustworthy.

Read 1 Corinthians 7:25 Using Other Translations

Now concerning virgins I have no commandment of the Lord: yet I give my judgment, as one that hath obtained mercy of the Lord to be faithful.
Now concerning the betrothed,I have no command from the Lord, but I give my judgment as one who by the Lord's mercy is trustworthy.
Now regarding your question about the young women who are not yet married. I do not have a command from the Lord for them. But the Lord in his mercy has given me wisdom that can be trusted, and I will share it with you.