The quieter and simpler sound of the semantron is understood to symbolize the Old Testament prophets , for it is the symbol only of a coming event , .
The ringing of the bells is spread far into the air symbolizing the annunciation of the Gospel throughout the world .
The quieter and simpler sound of the semantron is understood to symbolize the Old Testament prophets , for it is the symbol only of a coming event , whereas the ringing of the bells is spread far into the air symbolizing the annunciation of the Gospel throughout the world .