2 Samuel 18:16

When you go to war in your land against the adversary who oppresses you, then you shall sound an alarm with the trumpets. Then you will be remembered before Yahweh your God, and you will be saved from your enemies.

So Joab blew the trumpet; and all the people stood still, and pursued Israel no more, and they fought no more.

Then the woman went to all the people in her wisdom. They cut off the head of Sheba the son of Bichri, and threw it out to Joab. He blew the trumpet, and they were dispersed from the city, every man to his tent. Then Joab returned to Jerusalem to the king.

There happened to be there a wicked fellow, whose name was Sheba, the son of Bichri, a Benjamite; and he blew the trumpet, and said, “We have no portion in David, neither have we inheritance in the son of Jesse. Every man to his tents, Israel!”

Wisdom is a strength to the wise man more than ten rulers who are in a city.

My anguish, my anguish! I am pained at my very heart! My heart trembles within me. I can’t hold my peace, because you have heard, O my soul, the sound of the trumpet, the alarm of war.

When he had come, he blew a trumpet in the hill country of Ephraim; and the children of Israel went down with him from the hill country, and he led them.

She put her hand to the tent peg, and her right hand to the workmen’s hammer. With the hammer she struck Sisera. She struck through his head. Yes, she pierced and struck through his temples.

When the men of Israel saw that Abimelech was dead, they each departed to his place.

Jonathan struck the garrison of the Philistines that was in Geba, and the Philistines heard of it. Saul blew the trumpet throughout all the land, saying, “Let the Hebrews hear!”

They took Absalom and cast him into a great pit in the forest, and raised over him a very great heap of stones. Then all Israel fled, each to his own tent.

Then a wise woman cried out of the city, “Hear, hear! Please say to Joab, ‘Come near here, that I may speak with you.’ ”

You also have delivered me from the strivings of my people. You have kept me to be the head of the nations. A people whom I have not known will serve me.

An evil man seeks only rebellion; therefore a cruel messenger shall be sent against him.

Drive out the mocker, and strife will go out; yes, quarrels and insults will stop.

Because sentence against an evil work is not executed speedily, therefore the heart of the sons of men is fully set in them to do evil.

Now a poor wise man was found in it, and he by his wisdom delivered the city; yet no man remembered that same poor man.

It will happen in that day that a great trumpet will be blown; and those who were ready to perish in the land of Assyria, and those who were outcasts in the land of Egypt, shall come; and they will worship Yahweh in the holy mountain at Jerusalem.

Blow the trumpet in Zion, and sound an alarm in my holy mountain! Let all the inhabitants of the land tremble, for the day of Yahweh comes, for it is close at hand:

Does the trumpet alarm sound in a city, without the people being afraid? Does evil happen to a city, and Yahweh hasn’t done it?

Even things without life, giving a voice, whether pipe or harp, if they didn’t give a distinction in the sounds, how would it be known what is piped or harped?

For if the trumpet gave an uncertain sound, who would prepare himself for war?