That's nonsense.
I have a cold. I pray to my God to be relieved of my cold. The cold goes away. I have evidence of my God's existence and concern for my well-being for me, ... just as I'd expected.
I have a cold, I don't pray to god for relief because I don't believe that god exists or will relieve me of a cold. My cold runs it's course, but then goes away, ... just as I expected.
Evidence is subjectively identified and determined because reality is subjectively experience and defined. "God" is a conceptual paradigm for theists, like scientific materialism (scientism) is for atheists. They each generate their own "evidence", or lack thereof, by the way they cause their adherents to understand and experience their own existence.