The young church in Thessalonica is enduring significant affliction and persecution for their faith in Christ. And in their communication with Paul, Silvanus and Timothy, they ask, why are they having to suffer so much? Why doesn't God stop their persecution? Paul and his companions respond that God has good purposes even in their unjust suffering and they share with them the hope of Heaven.
Paul writes a second time to the church in Thessalonica to strengthen their faith in the midst of great suffering. He praises God that their faith is not failing, but growing. We learn from their example, that faith in Christ is not static, but dynamic. Furthermore, our faith can and should be growing no matter our earthly circumstances.