The second of the Epistles, and the seventh book in the New Testament, is Paul's first letter to the Church in Corinth; I Corinthians. It was written when Paul was in the city of Ephesus, in modern-day Turkey, after he has heard about divisions in the Corinthian Church which he founded three years previously. There are reports of immoral behaviour and lawsuits between members, which Paul wishes to address. There are also questions concerning correct behaviour which Paul answers in his letter.
I Corinthians 7:10-11
"And unto the married I command, yet not I, but the Lord, Let not the wife depart from her husband: but and if she depart, let her remain unmarried, or be reconciled to her husband: and let not the husband put away his wife"