Job 39:24

and he will not believe until the trumpet sounds.

He swalloweth the ground with fierceness and rage: neither believeth he that it is the sound of the trumpet.

He eats up the ground with fierceness and rage, neither does he stand still at the sound of the trumpet.

He diggeth in the valley, and reioyceth in his strength: he goeth foorth to meete the harnest man.