I dont belive in god. There might have been some sort of human-oid being (or even a con artist) that directed the evovling human race to do so. Every one in those time periods were kinda whack because they didnt have science to explain things. The red sea couldnt have parted because someone said so. There are arguments and flaws in the time frames throughout the bible due to oral tradition. Since oral tradition very accurate its very hard to prove precisely what happened but we do have an idea what might have happend. knockblocker1 brings up the issue of why? noone can answer that unless a "god" did exist and "god" himself answered that question. Simply as that religion has only a grasp of that happened to our comprehension because we werent there when it happened. We wont ever know unless someone invents a time machine (lemme know if you do so i can win the 106 million power ball in like 2000 ya? and rape a few chicks while im at it :P j/p)

For the big bang, what caused it is unknown and cant be explained through our limited technology as of now (until we figure out how to develop warp drive * 234587243569634 we can yah ). However if we find out that quarks have mass we are all fucked in about 329872395624356 billion years (hypothetical number i pulled out of my ass but its like some where in the high billions) with another big bang (anyone wanna join me to see the fireworks?_?). As for the laws of matter, i would theoritically guess that matter has existed like the space time continium as how electrons move throughout an electric circuit, they are already there. A battery merely acts like a pump moving the electrons to do w/e. Simply to say, matter always existed and a bad pressure moment could have forced an explosion/implosion creating the big bang (possibly an accident).