Trouble falls on us all, and sometimes at the most inopportune times. It happens not just to our loved ones, but to strangers we may never see again, yet who God wants us to lift up nevertheless: waiters, cab drivers, a fellow student at a coffeehouse, the widower sitting next to us in the waiting room, a stressed mom with kids in the checkout line, someone at the gym. It's not always easy to know what to say in those "divine encounters," but Prayers...