Nabi is the guide of a community. Rasul has a message for the whole of humanity, each having a certain cycle of time for his message. The mystic therefore sees in the masters of humanity not only the deliverers of the divine message, but sees them as the spiritual sovereign, controllers of the universe during their cycles. There is a cycle for every aspect of the life of an individual, and the life of the world. In the life of an individual the period from his birth to his death is the first half, and from death to assimilation in infinity is the second half. The sub-cycle in man's life is from infancy to youth, where ends the half, and from youth to age, where it finishes.