We know that sound is a part of those waves that are created in air, water and solid things. What reaches the human ears is the sound with a speed of 20 to 20,000 decibels per second but there are creatures that can hear sounds on higher frequencies. The bats are able to hear sounds that travel 145,000 decibels per second. (1)

We hear that the animals are aware of the impending earthquakes earlier than man because they probably feel the waves of the earth quakes earlier but men do not.

It is also known that sometimes these sound waves destroy everything. The effect of the bombs on humans and building are equally devastating. They destroy every obstacle within a moment and sometimes blow buildings and human to smithereens. It is not surprising that the shriek of the Day of Reckoning will destroy all living creatures and shatter the mountains into dust.

Hazrat Ali has said something very impressive which is recorded in Nahjul Balagha:

“The trumpet will be sounded and the hearts will stop beating, the tongues will go dumb, the boulders of the mountains will become dust after clashing against each other. The earth will leveled in a way that will say that there never was any mountain on it. (2)But these things are related to the shriek of death and the shriek of life is something else all together. It is a life giving sound which will rekindle movement into life. We know very little about it just as we know very little about the events of the Day of Reckoning.

1. See the Book of Sounds page 57 and Najmol Jamia’ page 90

2. Nahajol Balagha Sermon No 195