What Happens When We Pray

Matthew 21:22 (KJV from www.biblegateway.com)
"
22 If you believe, you will receive whatever you ask for in prayer.
"

Jesus says the disciples that if they have faith they can cast mountains into the sea.
Even if we do not believe that we are that powerful, we should believe that God intervene in the natural world in response to prayer. And He will intervene not because our desire to avoid suffering, but only when and if his intervention will bring the human life closer to God.