Bible Verses About Trumpet: Giving alarm in cases of danger

Son of man, speak to the children of your people, and tell them, When I bring the sword on a land, and the people of the land take a man from among them, and set him for their watchman;

if, when he sees the sword come on the land, he blow the shofar, and warn the people;

then whoever hears the sound of the shofar, and doesn’t take warning, if the sword come, and take him away, his blood shall be on his own head.

He heard the sound of the shofar, and didn’t take warning; his blood shall be on him; whereas if he had taken warning, he would have delivered his soul.

But if the watchman sees the sword come, and doesn’t blow the shofar, and the people aren’t warned, and the sword comes, and take any person from among them; he is taken away in his iniquity, but his blood will I require at the watchman’s hand.