This is the kind of question I was hoping would be debated on this subreddit: God without faith?

Let's assume that for whatever God+Jesus+ghost did in the past, they do not interfere with human lives in the present. This explains why prayer doesn't cure everything, and why there are starving children.

So the proof for God's existence is people's faith. As long as there are people who truly believe Yahweh exists, he will continue to exist in at least abstract form.

Now, let's hypothesize that everyone with faith vanished (stopped believing, died, etc.). God would also cease to exist. No one would have dreams or prophecies, people would stop congregating to worship him, and God of course remains uninvolved from human affairs.

In this sense, God can only exist through faith. If God truly existed, he would exert at least one messenger with undying faith. Yet because no one believes in him (in our hypothesis), nothing is attributed to God.

To reiterate, he only exists because of our thought processes, in our heads. Can you argue God's existence in a land of only non-believers?