Atheists. How did the first protein pull itself together?

Proteins are the building blocks required for life to exist. For a protein to exist you need a chain of left handed amino acids to chain together in specific order. If one is out of place it's not a protein. If you put exactly the amino acids you need together in one place you can rearrange them a TRILLION TIMES A SECOND FOR THE AGE OF THE EARTH and not come even close to using up all the incorrect chains. And if by some amazing luck you did form a protein chain you only have ONE protein. To get to the first mitosis capable cell is far more complex.