Paul wrote to the Christians in Corinth. These Chrsitians had many problems. Paul wanted to help them. They were listening to false teachers. They did not want to help the poor Christians in Jerusalem even though they promised to do this. They also thought evil things about Paul. Paul wanted to help these Chrsitians to live in a way that honored God.
The letter was sent to the church of Corinth and also to other Christians near Corinth (see: 1:1, 9:2). Corinth was a large city. Many ships went in and out of Corinth. It was a Roman colony, meaning that many of the Corinthians were people who moved there from Rome. They did many of the same types of things the Romans did. While there were Jews in this church, there were more Gentiles. Paul founded the church of Corinth on his second journey (see: Acts 15:40–18:23).
Paul wrote many letters to the Christians in Corinth. , including many letters (at least one from Corinth to Paul, 1 Corinthians 7:1; and between two and six from Paul to Corinth). Paul wrote this letter to help resolve the problems the Christians were having. He rebuked them for sinning. He wanted them to know he was an apostle. He also wanted them to give to Christians in Jerusalem as they promised to do.