Abdullah Atham was born in a Muslim household in Ambala in 1828. On 28 March 1853, he visited Karachi to be baptised and become a Christian. He further made an addition to his name by adding the word Atham, meaning the one that sins. He became a Tehsildar (tax collector) of Ajnala and Batala. Later, he was assigned as the extra assistant commissioner of Ambala and Karnal. He strongly opposed Islam and its founder. Further, he wrote books against the Holy Prophetsa, and, God forbid, accused him of being the Dajjal. Among the books he wrote are Andruna Bible and "Asliyyat-e-Quran". 

A debate of 15 days took place between the Promised Messiah (as) and Abdullah Atham regarding Islam’s truthfulness. This debate was later published in a book form named Jang-e-Muqaddas (the Holy War). He died according to the divine prophecy on 27 July 1896 in Firozpur and became a sign of Islam’s truthfulness.