Do you Believe?

Does He not make His presence known in the world around us? Jesus has certainly made me aware of His presence in my life. But for the simplest argument of whether there is any god, the laws of physics state that order comes out of chaos only when external energy is introduced into a system--in other words, perhaps there was a "big bang", but even so, it was God that caused it and who willed all the order that exists into being.