The great sage Nārada Muni has a spiritual body; therefore old age, disease, birth and death do not affect him. Nārada is the most kind devotee of the Supreme Lord, and his only business is to travel all over the universe and preach God consciousness. Like Nārada Muni, many other devotees of the Lord are engaged in preaching the glories of the Lord in different places and in different universes. Such personalities are beyond the jurisdiction of material laws.