A woman's life," says Kathy Vick, "is one gigantic act of buoyancy that requires a core of faith. It means believing that the same promise God made to Noah is offered to me." No matter how high the water or how insurmountable the task, if your security is in God, it's a sure thing. Of course first you have to go to the deep end and jump. The miracle of buoyancy, of learning to float, cannot be experienced unless you're in water up to your neck and...