Shortly after taking sannyasa in 1959, His Divine Grace Srila A.C. Bhaktivedanta Svami Prabhupada took residence at the most important temple in Vrndavana, the Sri Sri Radha-Damodara Mandira at Seva Kunja. Sri Nirmal Candra Gosvami, the present Sevaite-acarya of Radha-Damodara Mandira, who was a young man at the time, remembers when Srila Prabhupada first came to reside at Sri Sri Radha-Damodara Mandira.
Srila Puri Maharaja's appearance in this world was in 1898. Then his disappearance was 102 years later at the end of Karttika while he was residing at Jagannatha Puri. Jagannatha Puri is known as 'Vipralambha-dhama,' the place where the Lord and His devotees feel intense separation.
Just a week prior to the departure of Srila Bhaktisiddhanta Sarasvati Thakura from this mortal world (Thursday, January 1, 1937, at 5:30 am) he gave many essential instructions to his disciples. These instructions were later compiled in Bengali verse by one of Sarasvati Thakura’s most affectionate associate servants, Srila Bhakti Pramoda Puri Goswami Maharaja.
Offenses committed at the lotus feet of Vaishnavas, the Devotees, distance one from devotional service to the Supreme Lord. But in a higher sense it means to be removed from the service of Sri Radha. All divine service to Krishna is being conducted under her direction. To offend her servitors is to make one unfit for her divine service. The whole aim of Krishna consciousness is radha-dasyam, the divine service of Sri Radha, and offenses at the lotus feet of Vaishnavas make one unfit for such service.
This ontology on the topic of "Vaishnava" was first compiled in the book Gaudiya Kanthahara, under the chapter Vaishnava-tattva, by Srila Bhaktisiddhanta Saraswati Thakur Prabhupada.
If we try to understand everything in relationship with Krsna, then we understand vastava, reality. That is reality. If we study something minus Krsna, that is not real knowledge. Actually, Krsna is the original cause of all causes. Sarva-karana-karanam. So unless we come to the point of Krsna, any understanding, any knowledge is imperfect.
"A brahmana must be perfectly religious. He must be truthful, and he must be able to control his senses. He must execute severe austerities, and he must be detached, humble and tolerant. He must not envy anyone, and he must be expert in performing sacrifices and giving whatever he has in charity. He must be fixed in devotional service and expert in the knowledge of the Vedas. These are the twelve qualifications for a brahmana."