2 Samuel 18:16
And Joab had the horn sounded, and the people came back from going after Israel, for Joab kept them back.
2 Samuel 2:28
So Joab had a horn sounded, and all the people came to a stop, and gave up going after Israel and fighting them.
2 Samuel 20:22
Then the woman in her wisdom had talk with all the town. And they had Sheba's head cut off and sent out to Joab. And he had the horn sounded, and sent them all away from the town, every man to his tent. And Joab went back to Jerusalem to the king.
Numbers 10:2-10
Make two silver horns of hammered work, to be used for getting the people together and to give the sign for the moving of the tents.
1 Corinthians 14:8
For if the war-horn gives out an uncertain note, who will get ready for the fight?