Example: If I say 2+2=5 and you say 2+2=4, we both cannot be right…either one of us is right or we both are wrong.

Same way all religions contradict each other, so either all are wrong and Atheism is correct or only One religion is Correct.. Common Sense: why will One God create so many religions with contradicting laws and create confusion.

Example: One God is telling Hindus Cow is sacred animal do not Kill them or eat its meat; and same One God is telling Muslims and Christians, Cow is just an animal, and we can slaughter and eat beef, and make Hindus and Muslims fight or Hinds and Christians fight, it do not make any sense.

So, Conclusion is that either all religions are not from God, and Atheism is correct , or only One Religion is correct.