'Horn' in the Bible

In that day will I cause the horn of the house of Israel to bud forth, and I will give thee the opening of the mouth in the midst of them; and they shall know that I am the LORD.

and he sees the sword coming against the land, and he blows on the horn and he warns the people,

and {anyone who listens} hears the sound of the horn and {he does not take warning} and [the] sword comes and it takes him, his blood will be on his [own] head.

[For] he heard the sound of the horn and he did not take warning; his blood will be on him. But [if] he took warning, he saved his life.

And [as for] the watchman, if he sees the sword coming and {he does not blow} the horn, and the people [are] not warned, and [the] sword comes and it takes {their lives}, he will be taken through his guilt, but his blood from the hand of the watchman I will seek.'