What godly miracle would it take?

[ignoramus]

Hey God. Make like a tree and............... Fuck off already!

[mordant]

But does anyone have a specific type of prayer they would need answered or miracle they would need to witness to convince them beyond a doubt?

A good start would be god growing a new limb for someone that's missing one. Not that leg-lengthening bullshit parlor trick, an actual leg growing out of a stump in a few seconds.

That would be a real simple test, particularly if I personally know the limbless person.

Short of that it would be impressive if any house of worship had such compelling value propositions that people were lined up for blocks to get them some of that. To hear most religionists describe their value propositions, that's what you'd expect to see. At some point a real One True Religion would quickly convert everyone on the planet. After all, everyone would be healed physically emotionally and mentally, enlightened, comforted, and infused with joy. That and more is regularly promised by god-botherers, if half of it ever happened it would have a more impressive result than, for example Christianity -- 2,000 years on and it still hasn't got more than 33% market penetration, even by the most charitable estimate (cultural Christianity).

Just cutting the bullshit and DELIVERING on what you entice people with, would be a frigging miracle.

[Astonished]

Hey God.  Make like a tree and............... Fuck off already!

No, no, it's "hey god, make like a tree and let me whack you with an axe about 500 times til you fall over, or take a chainsaw to your midsection." If there is one, he's fucked us over way too much to leave us being okay with him just fucking off and getting away with it.

[Abaddon_ire]

I tend to go with Dillahunty. I don't know nor do I need to know. dog is supposed to already know.

However, that is only half the problem. Supposing dog did do something that convinced me (or anyone else) that he actually existed, then what? Well, now dog has to convince me that dog is worthy and deserving of worship. The available evidence suggests that this is rather unlikely.

[Cecelia]

-All diseases cured (mental and otherwise)
-World Peace accomplished
-Get rid of all guns

[Whateverist]

Yeah, I like the idea of an immediate and unexpected good turn .. like Trump starts talking and acting like B Sanders, breaks down and bawls like a baby out of remorse for all he has done so far.

But I was going to ask for something decisive, unaccountable for by anything else. Perhaps fill all (ALL) of space with a 3D plaid of varying materials (lava, plasma, granite, ice, surprise me) that scrolls past us while luminescing in various colors?

[brewer]

Turn me into a newt.

The miracle would happen and I wouldn't have to worship. I mean camon, what kind of worship can I do with a newt brain?

The rest of you might be fucked though. (unless you join me, braaaaaap)

[Ravenshire]

Far more important than whether this gawd or that exists. If it proved itself real, why does it deserve worship as so many demand of their peons subjects thralls believers?

[Astonished]

I should have said something about, implicit in the intentional reveal of whatever interventionist miracle would be utilized to dispel all doubt about its existence, the god would then logically want to communicate through it what its intentions were and whether it wanted worship or not. Not that we'd be forthcoming with the ass-kissery til it performed umpteen miracles to make up for all the bullshit.

[Cyberman]

Since the question is asking what sort of suspension of the impossible would get me to believe the possibility of the impossible, I would hope the answer is obvious.