I have never once seen any reason to think that any of the many, many versions of 'God' that people believe in are at all real, let alone tangible or evident. I find them indistinguishable from fiction.
Hey, I tried to believe. And the things that impressed me were the great miracles that God did. I remember how God had Moses go to Pharaoh and told him to let the Hebrews go. What a joke... Why would Pharaoh do that? Except by the time God was done sending plagues and disasters, Pharaoh was glad to be rid of the Hebrews, Moses and their God. But then he decides to go chase them down. Bad idea. His whole army gets buried in water. If a person can believe all that stuff, it's pretty impressive. There is no one like God.
Another one of my favorites is when Moses lays down his staff and it turns into a snake. But Pharaoh does the same. Where did Pharaoh's god get that kind of power? But it doesn't matter, because Moses' snake eats Pharaoh's snake proving who's God is more powerful.
Then, I think, the most important miracle. And that's because if anybody in any religion claims that their God is real let them prove it by doing what Elijah did. He challenged the prophets of Baal to call down fire from their god.
1 Kings 18:21 And Elijah came near to all the people and said, “How long will you go limping between two different opinions? If the Lord is God, follow him; but if Baal, then follow him.” And the people did not answer him a word. 22 Then Elijah said to the people, “I, even I only, am left a prophet of the Lord, but Baal's prophets are 450 men. 23 Let two bulls be given to us, and let them choose one bull for themselves and cut it in pieces and lay it on the wood, but put no fire to it. And I will prepare the other bull and lay it on the wood and put no fire to it. 24 And you call upon the name of your god, and I will call upon the name of the Lord, and the God who answers by fire, he is God.”
Of course, the prophets of Baal failed. Their god didn't respond. But the real God, the God of Elijah did.
30 Then Elijah said to all the people, “Come near to me.” And all the people came near to him. And he repaired the altar of the Lord that had been thrown down. 31 Elijah took twelve stones, according to the number of the tribes of the sons of Jacob, to whom the word of the Lord came, saying, “Israel shall be your name,” 32 and with the stones he built an altar in the name of the Lord. And he made a trench about the altar, as great as would contain two seahs[
a] of seed. 33 And he put the wood in order and cut the bull in pieces and laid it on the wood. And he said, “Fill four jars with water and pour it on the burnt offering and on the wood.” 34 And he said, “Do it a second time.” And they did it a second time. And he said, “Do it a third time.” And they did it a third time. 35 And the water ran around the altar and filled the trench also with water.
36 And at the time of the offering of the oblation, Elijah the prophet came near and said, “O Lord, God of Abraham, Isaac, and Israel, let it be known this day that you are God in Israel, and that I am your servant, and that I have done all these things at your word. 37 Answer me, O Lord, answer me, that this people may know that you, O Lord, are God, and that you have turned their hearts back.” 38 Then the fire of the Lord fell and consumed the burnt offering and the wood and the stones and the dust, and licked up the water that was in the trench. 39 And when all the people saw it, they fell on their faces and said, “The Lord, he is God; the Lord, he is God.”
Now whom of all the believers in any religion would dare try this? If they believe their God is so real, then why not do this? Here's one proof that would be very convincing.
But... if they fail... and their god doesn't respond, what are we to think? Is their god as just imaginary as the one believed in by the prophets of Baal?
The God in the Bible and the NT did things. Spoke from heaven, had the Sun stand still, had his Son walk on water and get raised from the dead. Or... those were just stories. Fictional stories to make this God sound all-powerful and real.
Should we be satisfied with stories and just believe? God, supposedly, did prove himself real in the past. Why can't he still prove himself real today? Why can't believers today have their God prove himself by sending fire from heaven or parting a sea?
Like you say, they are "indistinguishable from fiction." And without proof, they remain that way.