I believe in the creationist theory, my question is posed toward darwinist...
In regards to the big bang heory, where did the matter come from to have the big bang?
The Big Bang theory posits that matter (and anti-matter) were both created as part of the Big Bang. In other words, matter didn't cause the big bang, matter was produced BY the big bang. This is a result of the equivalence of matter and energy (Albert Einstein's E=mc2).
However, you also seem to be asking about Darwinism, which has absolutely nothing to do with the Big Bang theory. Darwinism is an explanation for life on planet Earth, and Big Bang is an explanation for the existence of the universe as a whole - two very fundamentally different questions.
Nobody knows for certain what could cause the big bang. However, there are two theories that scientists developed in the late 20th to beginning of the 21st century. They are String Theory and M theory. The M stands for Membrane.
String Theory posits that what we call particles/antiparticles are just vibrating strings in extra dimensions other than the familiar space-time. M-theory posits that our universe is sitting in a 3-D membrane (one of many parallel membranes) embedded in a higher dimentional space. Particles are still strings but have endpoints that must be on the membrane. Adjacent membranes are are a microscopic distance apart and all membranes constantly warp ever so slightly. If two membranes collide, a Big Bang occurs giving birth to two universes, one in each membrane.
Just imagine if the two formed universes differ by only there being an antiparticle in one universe for each corresponding particle in the other and vice versa, but with no difference with the relative motion/interaction of the contents. Then it would mean we have a twin universe where there is an anti-earth with an anti-you and an anti-me on it living the same lives as we do here.
Referring to michael s answer of yesterday - Where did the matter did not explode come from??