There is no progress in prayer without progress in faith, a purification of faith. And this entails the removal of all the props which depend on human endeavor, human reasoning, signs and the rest. It is the naked faith which is a terrifying experience and yet is the meeting point ultimately between God and ourselves in the depth of our being. This experience of the purification of faith is not normally one which comes early in the spiritual life. We must learn to wait.
When an event stirs great sadness and grief in us, after the wailing and the tears and the tearing of our hair, there comes a time when we have to fall silent. It is even beyond prayer. Prayers, which are also offered up at such moments, do not substitute for silence. Silence is the ultimate prayer.
~ from COMING TO OUR SENSES by Jon Kabat-Zinn