Hello Mr Bride... As E = mc2 so I think that creation came in existence with energy and light as m (mass) = energy (E/c2) and there are three varieties...
Natural - Everything that has weight is basically cooled E/c2 (plasma)
Intellectual - Our thinking can produce a light
Spiritual - E (Energy, motivation, warmth, love) / c2 (Faith, hope, charity, joy)
It is of my belief that most atheists hearts have been hardened to the spiritual, so the first thing I would do is make sure that they behold good wholesome character... Next, for the big boom to have occurred someone had to instigate it. In which happened with these words... "Let there be light!" There are also miracles within the human body as the ability to sense sight and sound. If the earth were not in an exact place it would either be too hot or too cold. If our eyes were not perfectly designed they would be unable to focus the reality around them. All of which came by intelligent design, in which God the Father is the designer!