Check out what leading physicists are saying: Search for books by John C. Polkinghorne.
Why not tell them to listen to the scientists who should know more about science than they do?
I like the catechism quote too. I love that they have this stuff online.
I would recommend reading some other materials on the subject too. The Case for a Creator: A Journalist Investigates Scientific Evidence That Points Toward God (Paperback)
b...