Once again, the apostle urges us to be watching and waiting for Christ, not for the coming of the Antichrist or other prophesied events of the last days. Evidently, a few in the Thessalonian church were so sure the day of the Lord had begun that they had quit their jobs and were becoming busy bodies in the church. Paul was forced to rebuke such as these (2 Thessalonians 3:6,11).

Source:

KJV Defenders Study Bible, by Dr. Henry Morris, Ph.D.
Publisher: Thomas Nelson
Language: English
DEF 10 ISBN 0-529-10444-x
DEF 10-1 ISBN 0-529-10445-8