Light is understood to be a twofold phenomenon not only in modern physics but also in ancient biblical myth. Light in Hebrew is referred to as sapir. You may be familiar with the English word—sapphire–which is derived from the Hebrew word. A sapphire, with its incomparable blue shine, is a stone of light.
The identity of spiritual and physical light becomes clearer when we focus on two more words that spring from this luminous Hebrew root, sapir. Those words are mispar and sippur. Mispar means number. Sippur means story.
Mispar, like “particle,” expresses the point-like quality of light; sippur, like wave, captures light’s fluid nature. They are sister terms, both born from sapir. Not by coincidence, these words express the unique dual nature of the spiritual light our soul prints emanate.