What does 1 Corinthians 1:2 mean?Paul's letters follow the general standard for introductions used in his era. He identified himself in the previous verse. Now he describes who the letter is for, adding to that some beautiful theology about all of us who are Christians.
Paul is writing to God's church in Corinth. Corinth was a big city on a major trade route. Paul had introduced Christianity and planted a church there, staying for over a year and half to serve the people (Acts 18:1–18). He knew these Corinthians and their environment well.
Paul says he is writing to Christians, those who are sanctified in Christ Jesus. The word "sanctified" refers to something that has been "set apart" for special purposes. Every person who is a Christian has been marked by God, as His own possession, set apart from the rest of humanity for His own purposes. Christians are not hoping, by good behavior, to become sanctified someday. By God's grace through faith in Christ, that has already happened.
Paul next says these Christians in the church in Corinth are called to be saints, together with all the other Christians—those who call on Jesus' name—in all the other places in the world. Theologians sometimes call this group of all the saved people everywhere the "universal church."
Paul writes that one thing we all have in common is that Christ is our Lord. This is true for every Christian.