'Trumpet' in the Bible

Therefore when thou doest thine alms, do not sound a trumpet before thee, as the hypocrites do in the synagogues and in the streets, that they may have glory of men. Verily I say unto you, They have their reward.

And he shall send his angels with a great sound of a trumpet, and they shall gather together his elect from the four winds, from one end of heaven to the other.

For if the trumpet give an uncertain sound, who shall prepare himself to the battle?

In a moment, in the twinkling of an eye, at the last trump: for the trumpet shall sound, and the dead shall be raised incorruptible, and we shall be changed.

And the sound of a trumpet, and the voice of words; which voice they that heard intreated that the word should not be spoken to them any more:

I was in the Spirit on the Lord's day, and heard behind me a great voice, as of a trumpet,

After this I looked, and, behold, a door was opened in heaven: and the first voice which I heard was as it were of a trumpet talking with me; which said, Come up hither, and I will shew thee things which must be hereafter.

And I beheld, and heard an angel flying through the midst of heaven, saying with a loud voice, Woe, woe, woe, to the inhabiters of the earth by reason of the other voices of the trumpet of the three angels, which are yet to sound!

Saying to the sixth angel which had the trumpet, Loose the four angels which are bound in the great river Euphrates.