111 Yet it is not every one's business to sound each trumpet, nor every one's business to call together the whole assembly, but that prerogative is granted to the priests alone, and the ministers of God who sound the trumpets, so that whosoever shall hear and follow there where the glory of the Lord is, and shall with early determination come to the tabernacle of witness, may be able also to see the divine works, and merit that appointed and eternal home for the entire succession of his posterity. For then is the war finished and the enemy put to flight, when the grace of the Spirit and the energy of the soul act together.
Source: On the Death of Satyrus (New Advent)