Why did Balak call upon Bilam? He heard that Moshe had a great influence upon Bnei Israel with the many speeches he made. He thought he could counter Moshe’s success by bringing in another personality that had
a great reputation that he could affect many changes with his speech. Bilam was the right man for him.
Bilam was finally convinced to come at Balak’s bidding. A strange thing happened during his trip to Balak. The beast he was riding on suddenly started to speak. What was the message that Hashem was sending to Bilam? Plain and simple, Bilam was told that his ability to influence changes with his speech, is meaningless. He was demonstrated that even a beast can be made to speak.
There are many people who speak well and influence people. It does not mean that the message the speaker is sending is the right one. It depends on who is speaking and what he has to say. Moshe spoke in the name of Hashem so his words were heeded. Bilam spoke in the name of Balak and his words ended up ineffective.
We must be very careful what speaker we go to hear and what speaker’s words we take to heart.
On this topic of Power of Speech, Check out this video from http://DropsofLightProject.com