'Message' in the Bible

not to be easily upset in mind or troubled, either by a spirit or by a message or by a letter as if from us, alleging that the Day of the Lord has come.

Therefore, brothers, stand firm and hold to the traditions you were taught, either by our message or by our letter.

Finally, brothers, pray for us that the Lord’s message may spread rapidly and be honored, just as it was with you,

But if anyone does not obey our message through this letter, take note of him and do not associate closely with him, so that he may be ashamed.