Some historians of modern Indian religious thought claim that, in respect of a pure monotheism free from pagan or polytheistic myth and a morality free from taboos and superstition, Rammohun was indebted to the Christian missionaries of his time and more particularly to the Baptists of Serampore. Thus, E. Daniel Potts, in his British Baptist Missionaries in India, 1793–1837, observes:
The Brahmo Samaj or Sabha (or Theistic Society) founded by him [Rammohun] in 1828 after he disassociated himself from Adam's Unitarian Association used a congregational form of worship utterly unknown to the ancient form of Hinduism he believed he was restoring; any many of its teachings, particularly ethical, were drawn from those of the Precepts of Jesus. Related organizations to reform Hinduism sprang up in the 1830–s and after, and in the process propagated, though their leaders would not always admit this, the idea of Christian morality – both enterprises begun by Roy's direct response to missionary and particularly Baptist endeavours.’