'Blew a Trumpet' in the Bible

So Joab blew a trumpet, and all the people stood still, and pursued after Israel no more, neither fought they any more.

Then Joab blew a trumpet, and the people returned from following Israel: for Joab spared the people.

And there happened to be there a man of Belial, whose name was Sheba, the son of Bichri, a Benjamite: and he blew a trumpet, and said, We have no part in David, neither have we inheritance in the son of Jesse: every man to his tents, O Israel.

Then the woman went unto all the people in her wisdom. And they cut off the head of Sheba the son of Bichri, and cast it out to Joab. And he blew a trumpet, and they retired from the city, every man to his tent. And Joab returned to Jerusalem unto the king.