Is there any proof that religion is not man made?

Before I start just want to say I do not intend to offend anyone I just came to look at the Christian perspective on this question. So I was reading about a psychological study about how people believe that with pain and struggling you will end up receiving great rewards. See the article [here](https://www.behaviorist.biz/oh-behave-a-blog/suffering-just-world) . This seems like the basis of a few of the major world religions and I feel like religion may have been used to keep society under control at a time where it was far from it. Also looking at paintings historically you can see that there was a time where they tapped into religiosity and then into monotheistic religiosity which also kind of adds to the fabricated nature. In Christianity do you have any evidence that the religion is man made? Is there any psychological, philosophical or other scientific studies to back it up? What is the Biblical evidence