Faced blackmail and intimidation

Nehemiah 6:1-9
Further opposition to the rebuilding
They sent message:"Come, let us meet together in one of the villages on the plain of Ono." Totally four times with same message, and Nehemiah gave them the same answer "I am carrying on a great project and cannot go down. Why should the work stop while I leave it and go down to you?"
The fifth time, Sanballat sent his aide to me with the same message, and in his hand was an unsealed letter. It was saying Nehemiah was plotting to revolt, and therefore you are building the wall. and you are about to become their king..."
Nehemiah reply:"Nothing like what you are saying is happening; you are just making it up out of your head."
The opposition realize that their only chance of stopping the work is to get rid of Nehemiah. Their first move is to try to persuade him to leave Jerusalem for talks. When that fails they try blackmail and intimidation(恐嚇).
Why?
Nehemiah knew that the enemy try to stop the work is to get rid of him, so he refused accept the invitation with mild words.
More trouble is the blackmail it might make more rumor among people and stop the work.m
Do not trust everything, but knowing that there are enemy who are envy what I am doing.
How?
Alert to each word and each message, some are opposition force from the darkness.