In the early chapters of 1 Samuel, we read of a very interesting series of events. The Israelites, erroneously believing God would never allow the Ark of the Covenant to be captured, decided to carry it into battle against the Philistines. They found out the hard way that you don't treat God that way, and so they suffered a very devastating defeat, and the Philistines captured the Ark.
Rejoicing over their victory, the Philistines placed the Ark before their god, Dagon. Things did not end well for him, as he repeatedly found himself on his face before the Lord, eventually with his head and arms broken off. The Philistines did not find themselves much better off than Dagon. Wherever they sent the Ark, that city would be struck with disaster.
So, they went to their priests and diviners and asked what to do. Their answer: Send the Ark back home, with a guilt offering: Five gold tumors, and 5 gold mice. However, there was still doubt in their mind that it was actually God who struck their lands. So, they came up with a little science experiment: "Now therefore make a new cart, and take two milch kine, on which there hath come no yoke, and tie the kine to the cart, and bring their calves home from them: And take the ark of the Lord, and lay it upon the cart; and put the jewels of gold, which ye return him for a trespass offering, in a coffer by the side thereof; and send it away, that it may go. And see, if it goeth up by the way of his own coast to Bethshemesh, then he hath done us this great evil: but if not, then we shall know that it is not his hand that smote us: it was a chance that happened to us." - 1 Samuel 6:7-9
This seems rather sensible. Realistically, there's no way those cows would head straight to Bethshemesh unless the Lord guided them. Not being used to the yokes, they'd want to cast them off. Being separated from their calves, they'd want to get back to them instead. Even if they were willing to guide a cart, what are the chances they'd track all the way to Israel?
But they did!
These untrained, calving cows, did not divert their course to the right or the left, they took the Ark of the Covenant back into its rightful land. Against all likelihood, the Ark returned home. From this, as the Philistine priests had declared, God's enemies knew that it was not by chance that they had been struck with disaster. The God of Israel really was the God of the Philistines.
Centuries before microscopes, telescopes, and thermometers, the Philistines came up with a way to test if God really was there. They distinguished between chance and the supernatural not by being unrealistically sceptical, but by humbling themselves before God, offering Him a guilt offering, and having Him take it by His own hands. And He did.
Of course, God is not a scientific theory, and so to treat Him like one is positively asinine. But though He cannot be tested scientifically, like some bottle of goop, He can be tested in much the same way as the Philistines did. When we humble ourselves before Him, offering ourselves as a living sacrifice, the evidence He gives us is a changed life. When you repent of taking God's glory for yourself and making it bow before your idols, the tumors your sin brought you will begin to heal, and you become a new creation in Christ. Give it a try. I triple dog dare you.