I pray to god and I have to say that I don't just believe, I know he answers my prayer. I have on two occasions, had trouble first with terrible nightmares which had me scared to go to sleep and praying made them vanish. The second time was what the hymn writer John Newton described as "inward trials" I asked for two weeks peace and quiet and got exactly that, peace so perfect it felt like being transported to another world. Anyone who has read and understood John Bunyans book "Grace abounding to the chief of sinners" will know what inward trials are.