I always tell them I can prove the facts of science ---can you prove the myths that you believe in.That always goes to faith and then I ask them if they have ever played telephone where you past a comment from one person to the next and then see what comes out at the end. Then I point out they did not write much at that time and these stories were passed by word of mouth and that they were changed a great deal by people who did not understand science.For example Red Sea crossed at low tide, burning bush was sulfur burning,back from dead he was in a coma etc.They really hate logical explanations.