Rahmatullah Kairanvi wrote the book in response to the Christian offensive against Islam during the British rule in India, and specifically to counter the subversive attack made by the Rev. C. C. P. Fonder. Rev. Fonder had written a book in Urdu entitled Meezanul Haq, the open intention of which was to create doubts into the minds of the Muslims about the authenticity of the Qur’an and Islam.

Kairanvi’s intention in his book was first of all to show that the Bible cannot in any way be considered as a directly revealed book. He does this very effectively by means of his voluminous and authoritative knowledge of the Jewish and Christian scriptures. He demonstrates beyond doubt that the Books of the Old and New Testaments have been altered, almost beyond recognition, from their original forms. The work is even more notable in the light of subsequent Jewish and Christian scholarship and the various discoveries that have since been made in this field which all bear out the truth of Kairanvi’s thesis.