The historical background for I Thessalonians can be summarized as follows. After leaving Thessalonica, Paul tried to return several times, but Satan thwarted his plans. Therefore, he sent Timothy and Silvanus to strengthen and encourage the church during its time of affliction and to learn about their progress in faith. Timothy has now recently returned to Corinth from Thessalonica with an encouraging report that the church has remained steadfast in its faith despite severe affliction. Overjoyed by this report, Paul writes a paraenetic letter to encourage the Thessalonians in their faith and to remind them of what they already know.