Wouldn't be hard, just chuck a couple bricks of cash at me after appearing. If it's actual god then it's actual cash I can go and spend. That's proof enough lul.
Further, even if your god exists, that does not mean it's worthy of worship. In fact, any being who desires worship is most certainly not worthy of it.
Yeah, it was very clearly written by people who didn't know that much about how the world worked but did know that they could trick others into believing they were experts. And in the very first story, they added a warning to try to prevent others from figuring out things and proving them wrong: the original sin was eating from the tree of knowledge.
How that doesn't scream, "Stay ignorant so I can continue to control you!" to everyone who reads it and isn't a child who still trusts everything, I can't understand.
The Babel fish is small, yellow and leech-like, and probably the oddest thing in the Universe. It feeds on brainwave energy received not from its own carrier but from those around it. It absorbs all unconscious mental frequencies from this brainwave energy to nourish itself with. It then excretes into the mind of its carrier a telepathic matrix formed by combining the conscious thought frequencies with the nerve signals picked up from the speech centres of the brain which has supplied them. The practical upshot of all this is that if you stick a Babel fish in your ear you can instantly understand anything said to you in any form of language. The speech patterns you actually hear decode the brainwave matrix which has been fed into your mind by your Babel fish.
Now it is such a bizarrely improbable coincidence that anything so mindbogglingly useful could have evolved purely by chance that some thinkers have chosen it to see it as a final and clinching proof of the non-existence of God.
The argument goes something like this: "I refuse to prove that I exist," says God, "for proof denies faith, and without faith I am nothing."
"But," says Man, "the Babel fish is a dead giveaway isn't it? It could not have evolved by chance. It proves you exist, and therefore, by your own arguments, you don't. QED."
"Oh dear," says God, "I hadn't thought of that," and promptly vanishes in a puff of logic.
"Oh, that was easy," says Man, and for an encore goes on to prove that black is white and gets killed on the next zebra crossing.
Your [alleged] god [allegedly] knows what evidence will convince me, on the supposition They are omniscient.
In contrast to the few (thousands) of popular notions of god or gods, there are an unknowable but are greater number of theistic cosmic paradigms that are not popular or even conceived by humankind.
A lot of them are programmers or dreamers.
Most of them are completely apathetic to our well-being and don't care about us individually. Some don't notice us at all. To others, we're roaches in the card reader and are a pest.
To assume we are special or chosen by the divine is literally hubris.