not to be quickly shaken in your mind, nor yet be troubled, either by spirit, or by word, or by letter as from us, saying that the day of Christ had come.
The subject of 2 Thessalonians 2:1-12 is "the day of the Lord" (2 Thessalonians 2:2). This day, as the Old Testament and the New Testament refer to it, includes the Tribulation, the Second Coming, the Millennium, and the great white throne judgment (cf. Psalms 2:9; Isaiah 11:1-12; Isaiah 13; Joel 2; Amos 5:18; Zephaniah 3:14-20; et al.). [Note: See Lewis Sperry Chafer, Systematic Theology, 7:110.] 