What is this trumpet, which declares war against hell, rolls back the stone from the tomb, thunders forth life to the dead, and gives to all as they rise from their graves victory amid light everlasting? What is it? It is that to which the Lord referred above: The dead shall hear the voice of the Son of God. Not this the trumpet that from a horn of wood or brass gives forth a mournful bellow, calling to war, but the Voice that comes from the heart of the Father, from the mouth of the Son, the call to life to those that are in heaven and in hell.
And, at the last trumpet. The trumpet that in the beginning called the world from nothing, the same on the last day shall recall the world from death; and that which in the beginning raised man from the slime, the same at the end shall recall him from the dust.
St. Peter Chrysologus, Sermon 103
Locus Communis 