As to your question concerning whether relationships between devotees are eternal, the answer is "yes.'' This is confirmed by Sri Narottama dasa Thakura: "cakhudana dilo yei, janme janme prabhu sei'', he is my Lord birth after birth. In this way you have to understand, by studying carefully the philosophy. We have got so many books now and I want all of my disciples to read them carefully. Soon we shall be instituting Bhakti-sastri examinations and all brahmanas will have to pass. So utilize whatever time you find to make a thorough study of my books. Then all your questions will be answered.
Letter to Upendra, 7 January, 1976