It is one of the goals of human beings to develop to the point where life is aligned to God in such a way that we behave like an angel in complete service to heaven.
In order to listen to God's silence we must escape the din of distractions that normally deafen us to it. Being deafened to the silence within as well as the silence without is corrosive to God-hearing. To be silent is to so empty oneself of the din of transitory distractions that one becomes fully receptive to the silence that always and everywhere underlies them. Silence is that state of spiritual sensitivity in which seekers make themselves available to the silence of God's voice.