Theists ask me a question

[dyresand]

The sudden rapid expansion of matter and energy from a singularity. The singularity is the a point of energy that is infinity small without dimensions. The singularity more than likely was unstable causing it to expand outwards  that's the big bang in nutshell the sudden expansion of space and time. Gravity simply is the force that attracts two bodies together that's pretty much it.
Most of your questions can be answered via google you know

I asked where gravity came from, not what it is
Matter? I thought there wasn't any matter? And how was the energy produced?
You need there to be something already there for evolution to even be remotely plausible. Except, apparently there wasn't. Which disproves the big bang. Nothing can come from nothing.

Mass creates gravity I.E. objects create it if there is empty space there would be no gravity you cannot have gravity without mass  all it is just the force of attraction nothing more nothing less.

There was simple matter created after the big bang simple clouds of hydrogen and helium the two basic and abundant elements in the universe so the idea of nothing is wrong because there is something. Simple very hot clouds of hydrogen and helium given enough  time to cool off would create stars and eventually water. The water on earth is older then sun you can find out about star formations our sun itself is still fairly brand new. 

Give simple bacteria enough time over a long time span in the right conditions like earth you will eventually get complex life that's pretty much it. The first life on earth could have been a type of algae and then types of bacteria which would have then given time would have more than likely given rise to early sea life such as fish.

The nothing can come from nothing fallacy never use that. Okay for one know one knows for certain how the energy of the universe or the singularity you can only look so far back until mathematics start going wonky and don't make since. I didn't say after the big bang there was nothing after the big bang there was hot clouds of gases that were something and they did form stars  after awhile. But if you do say nothing cannot come from nothing you clearly haven't read up on quantum physics. Because the notion of nothing is a paradox nothing cannot exist as nothing is unstable if the universe were to end via entropy after awhile on a universal scale time itself would flow backwards crunching back in on itself restarting the universe all over. 

I mean this thread has gone so far off topic just PM me