The point was that evolution is based solely on mass and energy. Information is not even factored into the equation. However, information cannot come from just a big bang. This is not evident in our world. So the point is that there is a "non-material" element to information. The question then is "Where did information come from?" Our DNA has very complex information encoded in it. That shows a supremely intelligent entity put the code there. It would be like having a computer with an highly complex design in the software yet we just all think "Wow. It is great how that software just evolved from nowhere." Why is that not possible? Software on a computer is much less complex than our DNA.
Take a bunch of marbles of four colors, drop them into a half-pipe. They will form a random sequence of the four different colors. Is that sequence information? Yes.
Presumably, there were many instances where RNA molecules formed in random orders. Just one of these was self-replicating, the others formed and broke down and formed and broke down, but the self-replicating sequence copied itself and began the chain of evolution. The genetic material that is successful is passed down to its replicates and expanded upon, the genetic material which is unsuccessful is consumed by the successful lines. This is according to the hypothesis that RNA formed before DNA, since RNA structures can act as enzymes while it is much harder for DNA structures to do anything but hold the genetic code.