Have other religions like Christianity fallen into deceit? If yes, how should Muslims should react to this?
It began in the beginning of the era known as the Christian Era when Paul changed the teachings of Prophet Jesus (alayhi salaam). He changed those teachings to another religion which he called Christianity, and then that spread. Those who adhere to the teachings of Prophet Jesus were run down, their books were burnt and they were declared as apostates. They were deceived about Allah. Until this day, the Christian world of one billion people are deceived about Allah. They believe that Allah became a man and they worship that man. They believe and are deceived that they are worshipping Allah.
Similarly, Hindus represent another billion of humankind. They were deceived thousands of years ago that Allah became a man, animals and a variety of different things.
China and Russia, all these countries were deceived with Atheism as the state religion. Atheism teaches that there is no God and that is the ultimate deceit.
However, Allah has told:
“And thus We have made for every prophet an enemy - devils from mankind and jinn, inspiring to one another decorative speech in delusion. But if your Lord had willed, they would not have done it, so leave them and that which they invent.”
Allah also says:
“Do you not see that We have sent the devils upon the disbelievers, inciting them to [evil] with [constant] incitement?”
So Allah says to leave them.Our emergence should not be focused on them, our emergence should focus on ourselves and our own situation. The situation which has the ability to change and is within our means, power and ability.
 Surah al-An`am, 6:112
 Surah Maryam, 19:83< Back to Questions