The only means of authentic spiritual communication is the interior speech which is uttered in the silence from which the Word emerged, and which is only heard in the silence.
God is Silence. There is a silence of the tongue, a silence of the whole body. There is a silence of the soul and the spirit. The silence of the spirit is when all its movements are stirred solely by Being; in this state it is truly silent, aware that the silence which is upon it is itself silent.