Bible Verses About Trumpet: Heard at Mount Sinai at giving of the law

And it cometh to pass, on the third day, while it is morning, that there are voices, and lightnings, and a heavy cloud, on the mount, and the sound of a trumpet very strong; and all the people who are in the camp do tremble.

And all the people are seeing the voices, and the flames, and the sound of the trumpet, and the mount smoking; and the people see, and move, and stand afar off,