Science
The Big Bang is a good working theory. The Galaxies appear to be flying away from each other at amazing speeds, indicating to some that they may have all started from the same point of origin, although I don't believe anyone has identified the actual area of the point.
Remember too that "Time" was not initially present in the immediate aftermath of the proposed Big Bang, so the actual age of the universe would be off, as time did not exist, as we understand it.
Only a fool could look at the universe and explain it away as a random and accidental event, etc. Order is everywhere you look, as is apparent chaos.
The actual beginning of the universe may not be knowable, as we likely can never observe the entire universe and can only guess at things like dark matter and dimensions we know are there, but can not experience.
Religion
Religion has no place in science, period. All Earth religions are the creation of their respective cultures and are entirely man-made. There is no "True Faith". and no "Truth Revealed by God".
Millions of people have lost their lives trying to promote their "Truth and "Peace" by killing non-believers. This continues to this day. The sad irony of this is not lost on modern minds.
The Christian religion has a long history of trying to co-op or influence/suppress science . Men of Science who were judged "Heretics" and put their lives at risk for science, is one example of that behavior.
In modern times, we have the "Creationists" and the false science they seek to impose on others, usually with some governmental assistance. This needs to be resisted.
People have the freedom to believe whatever they want, even if it is really stupid. Christians should heed the words of their savior when it comes to Science:
Matthew 22:21 - "Render unto Caesar the things that are Caesar's, and unto God the things that are God's" - Attributed to Joshua ben Joseph, whom the Greeks of Alexandria renamed "Jesus".
RE: The Big Bang Theory Is Stupid