If anyone tells people that God has no power to complete their wishes then most of these people will stop going to religious places. Today various Gods have become a medium to complete those wishes which are beyond human control. This is common story with all religions across the world where people do not give any importance to what is written in sacred books of these religions and they only want immediate gratification of their wishes.
Therefore we see a mad race of people to religious places to get their wishes fulfilled by deities. The main objective of all religions across the world is to educate people about spiritual knowledge stored in sacred books so that they can live a good life. However, no one is interested in learning useful knowledge because everyone wants immediate results through simple selfish methods.