Saradananda, also known as Swami Saradananda, was born as Sarat Chandra Chakravarty in 1865, and was one of the direct monastic disciples of Ramakrishna. He was the first Secretary of the Ramakrishna Math and Ramakrishna Mission, a post which he held until his death in 1927. He established the Udbodhan house in the Bagbazar area of Calcutta, which was built primarily for the stay of Sri Sarada Devi in Calcutta, from where he used to publish the Bengali magazine Udbodhan. There he wrote Sri Sri Ramakrishna Lilaprasanga in Bengali, on the life of Ramakrishna, which was translated into English as Sri Ramakrishna, the Great Master. He is believed to be reincarnation of Saint Peter and he allegedly went into Samadhi when he was in the Saint Peter Church and said that "I remembered my past" and wrote in his diary that "Saint Peter again."

Ramakrishna, also called Ramakrishna Paramahansa, born Gadadhar Chattopadhay, was an Indian Hindu mystic. A devotee of the goddess Kali, Ramakrishna after adhering to various religious practices from the Hindu traditions of Vaishnavism, Tantric Shaktism, and Advaita Vedanta, as well as from Islam and Christianity, proclaimed that various world religions are "so many paths to reach one and the same goal", thus validating the essential unity of religions. His parable-based teachings espoused the ultimate unity of diverse religions as being means to enable the realization of the same God. He is regarded by his followers as an avatar or divine incarnation of God.