God Is an Amateur
It is my deepest faith that God both desires and has the ability to make intimate contact with every human creature.  After all, St. Augustine claimed that God loves each of us as if there were none other in all the world to love, and that he loves all as he loves each.  This being the case, expect the Holy One to do high business with your soul, and begin to look not necessarily for a voice you can hear with our ears, but events that correspond amazingly to the need of that moment.  The book that appeared somehow on my desk authentically "spoke" to my situation.  Appropriateness, not audibility, is the clue, and if you will widen your understanding to include this form of "speaking," who knows, dear friend, what may become a burning bush for you?