A core spiritual principle which transcends religious traditions is the idea that the intention behind our words can carry great power.
With words we build up or tear down, we heal or we destroy. A word spoken in the right way at the right time can shift people, places, and things into a more desired state of being.
This video shows how words morph the molecular structure of water and how our bodies might respond organically as well. Perhaps this is how prayer and meditation--when practiced in a positive way--facilitate recovery, healing, and yes, miracles too.