Do you only believe what you can observe? What if you don't observe the effects of God in your life, do you still believe? There is as much "faith" in science as there is in religion, more really if you think about it. For believers, faith is not choosing to believe in something even though you lack evidence, faith is actually an internal confident persuasion that God is who he says he is.

The religion of science says, we don't know why things work they way they do but we know it's not because of God. A statement like that takes great faith.

https://www.clintbyars.com/blog/2018/4/3/astrophysics-and-faith-what-do-they-have-in-common