Other than simple tautologies, there are no useful absolute truths or laws. For example, you can safely state that all triangles have three sides. So, if you are looking for truth, you don’t have to look far, but there is not much to find…
The difference between science and religion tends to be the starting assumption. In both science and religion, we come up with a statement about the way we think things are. This statement may derive from current observation, historical claims, or personal revelation (Eureka!). “The world is flat”, “there is only one universe”, and “we each have an immortal soul” are all examples of these statements. In science, the starting assumption is that the statement is false, and we immediately begin to try and prove it wrong. If a hypothesis can be tested and survives long enough, it becomes a theory. If it continues to survive, a fine tuned, narrowly focused version of it might eventually be considered a law. Religion takes the opposite approach, assuming the statement is true and any evidence to the contrary should be ignored. I don’t mean this in a negative way. Faith plays an important role in my life, and I am very happy with it.
This is all a generalization, but I think the point is solid. Science and religion are fundamentally different in the way they search for and recognize truth.
Though the Big Bang, and all that it implies, like the non-existence of space and time “before” the Big Bang (I know, poorly stated), is still a theory. One of it’s biggest weakness is its failure to explain the first fraction of a second. The theory works very well as long as we join the Big Bang already in progress, but during that initial fraction, the universe is not likely to be as we see it now, and understanding what it really was like will explain many things. The generally accepted version of reality, with a single curved universe, is currently being challenged by more complex possibilities that involve other universes. In fact, though I know I am oversimplifying this to the point of silliness, our universe may have actually resulted from some kind of collision between two other universes. Or more specifically, the singularity that became the Big Bang may have been the result of interference patterns emanating from the interaction of two other universes.
Of course, the metaphor defies understanding by us right now, because if multiple universes exist, “what do they exist in?” Years from now, though, this same question may seem as silly to us as the question flat earth people asked about the theory of a spherical planet, “why don’t we fall off?” With no clear concept of space and gravity, they missed the point entirely. Odds are, we are suffering from the same limitations.
So, in religion, have faith. It’s all true. We’re not just a random chemical reaction gotten out of hand, doomed to be born, live and die with no real consequence to the universe(s). With whatever spiritual path that feels right for you, trust that there is a point to all this.
And in science, be skeptical of all answers, because we certainly don’t understand it all, not yet. Maybe we never will.
Don’t confuse them by believing anything in science without skepticism, or feeling the need to prove a religious belief.