What does 2 Corinthians 1:2 mean?

In the previous verse, Paul has introduced himself, along with his companion Timothy, and identified his audience as the church at Corinth and the Christians in the surrounding area. Now he issues his formal greeting before beginning the main body of his letter.

Paul's expression of, or prayer for, "grace and peace" was a Christian version of a more standard letter greeting in the Roman era. Paul prays for grace to his readers, referring to the unearned favor God gives to all who trust in Christ (Ephesians 2:8–9). He also prays for peace from "God our Father" and the "Lord Jesus Christ." Those who have received God's grace through faith in Christ can experience the peace of heart and mind that only God can give.