This work constituted a detailed Introduction to the well known treatise on Christianity Izharul Haqq which was written by Maulana Rahmatullah Kairanawi in Arabic and edited and translated by me into Urdu. During the course of my work (of translating and editing), I studied the Christian religion in its original sources. The conclusions of my study constituted the said introduction which was later published separately under the title “What is Christianity”.
This work has been translated into Arabic; and has met with wide acceptance. For some time, the need was felt for an English translation and my learned brother Muhammad Shoib Omar undertook the task.
I have read the text, and have found that the translation reflects the ability and competence of the translator. He has exercised due care and shown diligence. May Allah give him the best reward and grant him tawfiq to undertake similar academic works.
I sincerely hope that this work will assist the English reader to properly understand Christianity.
MUHAMMAD TAQI USMANI
Durban — 13 April 1987.
 Please note the aforementioned repetition has generally been avoided in this translation.