Most of us have felt it: that unexplained prompting in our hearts to stop and pray for a friend, a loved one, or even a stranger. Sometimes we dismiss the feeling as a stray thought about friends, families, or situations. Sometimes we are even awakened from a deep sleep with an even deeper need to go to God in prayer. Where do those urges come from? Are they truly from God? And do those prayers have any effect on the one we're praying for? In Called...