'Horn' in the Bible

In that day I will make a horn put out buds for the children of Israel, and I will let your words come freely among them, and they will be certain that I am the Lord.

If, when he sees the sword coming on the land, by sounding the horn he gives the people news of their danger;

Then anyone who, hearing the sound of the horn, does not take note of it, will himself be responsible for his death, if the sword comes and takes him away.

On hearing the sound of the horn, he did not take note; his blood will be on him; for if he had taken note his life would have been safe.

But if the watchman sees the sword coming, and does not give a note on the horn, and the people have no word of the danger, and the sword comes and takes any person from among them; he will be taken away in his sin, but I will make the watchman responsible for his blood.