Sant Giani Bhagwan Singh had his education in Sikh scriptures from Sant Baba Daya Singh. He was taught the meanings of Sri Guru Granth Sahib, Vedant and of many other religions by his spiritual guide Giani Bhagwan Singh. He became the chief of the Damdami Taksal when Giani Daya Singh left for his heavenly abode. He preaches the Sikh scriptures far and wide. He used to stay in Majithia Bunga.
Sant Giani Bhagwan Singh devoted himself to the Gurbani. He was perfectly detached with the material world and practized the Sikh way of life throughout. While staying at Amritsar he trained innumerable experts in religious discourse, Sikh preachings and Akhand Pathis. The prominent among his pupils are Sant Harnam Singh, Sant Fateh Chand and Sant Amir Singh. Afterwards, Sant Amir Singh became the chief of the Amritsar Taksal, founded by Bhai Mani Singh. He was a perfect devout. He has written a perfect exegesis on Sri Guru Granth Sahib.
He was a famous religious discourse deliverer and a poet. His language was very simple and meaningful. Having great regard for the writings of the devouts (Bhagats), he had got printed the exegesis of their scriptures into two parts. Sant Giani Bhagwan Singh had regarded the Sikh Gurus as the march of God Himself on earth.
The first part of Bhagat Bani was printed in Samvat Nanakshahi 428 i.e. in 1897 A.D. It was printed at Sanskrit Press, Lahore, under the authority of Ram Chand Manak Tahla. The service of its publication was done by Bhai Gurmukh Singh, Bazar Mai Sewan, Amritsar. According to Giani Bhagwan Singh, he had to undertake this arduous task as so many Sikhs had requested him to do so. He said he had done it for them. As there is no limit to the interpretation of the scriptures of the Gurus, similarly the scriptures of the devouts know no bounds. Giani Ji writes in that book, "I don't have any special knowledge but whatever meanings I have read from my teachers, the same are put before the Sangat in the printed form." On its page 9 he has written, "My intelligence is meagre whatsoever I have learned with the grace of God that has been presented. The Guru will be helpful and give us the strength to cross this worldly sea so as to reach our eternal home Sri Sachkhand." His contribution is really very great in the form of his writings.