The apostles express gratitude for the Thessalonian church's faith, charity, and hope in Jesus Christ, noting their election by God and the effectiveness of the gospel. The church's conversion from idols to the living God and their expectation of Jesus' return from heaven is also acknowledged. The apostles' ministry among the Thessalonians was genuine and selfless, and they took comfort in knowing that the Thessalonians had accepted the Word of God and were living according to it. The Thessalonians are urged to live a life pleasing to God, abstaining from impurity and treating others with honesty and respect, and are comforted with the promise that those who have died in Christ will be raised again when the Lord returns.