The following is an extract from the sermon delivered by His Divine Grace Om Vishnupad 108 Śrī Śrīmad Bhakti Dayita Mādhav Goswāmi Mahārāj, Founder of Śrī Chaitanya Gauḍīya Maṭh (Regd.) on the holy day of his advent on Śrī Utthān Ekādaśi Tithi in 1967 at Śrī Chaitanya Gauḍīya Maṭh, 35, Satish Mukherjee Road, Calcutta-26 :-

To me Gurudeva manifests himself in four forms, viz :-

1. gu + ru—one who destroys ignorance. Appearance of the Absolute Knowledge, Bhagavān, removes ignorance. Hence, original guru is Bhagavān.
2. He who has engaged me in the service of Bhagavān directly is the second appearance of my Śrīla Gurudeva—Most Revered Nityalīlapraviṣṭa Prabhupād Śrīmad Bhakti Siddhānta Saraswati Goswāmi Ṭhākur, Founder of the world-wide Śrī Chaitanya Maṭh and Śrī Gauḍīya Maṭh organisations.
3. Vaiṣṇavas are the third appearance of Gurudeva. What do they do? As Gurudeva always engages his disciples in the service of his object of worship, vaiṣṇavas also do the same.
4. Disciples are the fourth manifestation of guru. They, as disciples, actually do the work of a guru, i.e. they engage me always in the service of Gurudeva. There is no scope of doing any anti-devotional act of violation. If there is any violation, they will detect it. Hence, disciples are also my Guruvarga. Disciples perform gurupūja by singing the glories of Gurudeva, I perform gurupūja by hearing. But by hearing the glories, if I have got the evil motive of misappropriating it, it will not be gurupūja. As chanting is bhakti, hearing is also bhakti. In whatever way devotees may express their hearts, they are all my objects of worship.