Only that teaching may be deemed perfect which fully develops and nurtures human faculties, rather than one which leans to a certain extreme. Observe the instructions given to us by the teaching of the Gospel and compare them to the teaching given to us by our faculties. Human faculties and the nature of man essentially constitute God’s ‘book of actions.’ How then can His book of words, known as the Book of Allah or God’s divine teaching, oppose and contradict His book of actions?
In the same manner, if the Messenger of Allah, peace and blessings of Allah be upon him, had not come, allegations would have been levelled against the morals, guidance, miracles and spiritual power of the past Prophets. However, the Holy Prophetsa absolved them all by his advent. Therefore, the signs in support of the prophethood of the Holy Prophetsa are more brilliant than the sun; they are countless and beyond measure. Hence, raising objections against the prophethood of the Holy Prophetsa or the signs of his prophethood is no different from a foolish, blind man saying that it was night even in broad daylight.
I say once more that the other religions would have remained in darkness if until now, the Messenger of Allah, peace and blessings of Allah be upon him, had not appeared. Faith would have been destroyed, and the earth would have been ruined by divine curse and chastisement. Islam shines like a lamp that has pulled others out of darkness as well.
If one reads the Torah, it becomes difficult to even learn about heaven and hell. If one looks at the Gospel, no traces of God’s Unity can be found therein. There is no doubt in the fact that both these books were and are from Allah Almighty, but what light can be attained from them? True radiance and real divine light, which is needed for salvation, is present in Islam alone.
Even in the context of God’s Unity, wherever you open the Quran, one will find it to be an unsheathed sword which cuts at the root of polytheism. Similarly, all the aspects of prophethood are spoken of so clearly and lucidly in the Holy Quran that no better exposition is possible.
(Hazrat Mirza Ghulam Ahmadas, Malfuzat, Vol. 2, pp. 3-4)