Interpretations of 2 Thessalonians

1. Does Hell exist? 1:8-9

2. "Be not soon shaken in mind ... by letter as from us."
   What letter is being referred to here? Is it 1 Thessalonians? If so, then should Christians not read it to avoid being "skaken in mind?" 2:2

3. Although 2 Thessalonians claims to have been written by Paul, many scholars think it was a forgery. 1:1, 3:17

4. Jehovah's Witnesses use these verses to justify disfellowshipping anyone who disagrees with the Watchtower's teachings. 3:6, 14