It is through vibration, through motion, that spirit turns into matter. Hindus call it Nada, and they always combine this word with Brahma; together this means God-vibration. They never call it vibration alone; they always call it divine vibration. By vibration spirit arrives at two experiences; the first is that it becomes audible to itself, and the next that it becomes visible to itself. In the Bible we read that first was the Word and the Word was God; and then came light, visible life. This means that the first experience of the spirit is that life is audible and that the next experience is that life is visible.