Paul, Silvanus, and Timothy, to the assembly of the Thessalonians in God our Father, and the Lord Jesus Christ:
    The term "Day of the Lord" was used among the prophets of the Old Testament to refer to a judgment from God where God’s people would be vindicated and their enemies punished. It was reference to historical events such as the fall of cities and nations to their enemies. These events were "types" of the final judgment of the Lord which will take place at the return of Christ and the resurrection of all from their graves.