2 Thessalonians 2:2; 2 Thessalonians 3:10

2 Thessalonians 2:2

2 that you not be quickly shaken from your composure or be disturbed either by a spirit or a message or a letter as if from us, to the effect that the day of the Lord has come.

2 Thessalonians 3:10

10 For even when we were with you, we used to give you this order: if anyone is not willing to work, then he is not to eat, either.