There is that old story about Newton. His students come in and see this model of the solar system and asked who built it. He says "no one". "How can that be? Someone had to build this." And then Newton says "you can't believe this just came to be, yet you can believe something so much more complex just poofed and came together on its own, with so many laws that fit together" etc. etc.

But we are not here to debate our faiths. It was about helping our growing children make sense of religion within their knowledge of real world science.