"Quickly sister, inside," the voice of a woman said. Two hands reached out, grabbed the girls, and pulled them inside. At the same time there was an almighty roar like the sound of a thousand crashing waterfalls, as the Israelite army let rip a mighty shout. For a split second afterwards, there was silence. It was like the silence of eternity holding its breath, watching, waiting, expecting something awesome and terrible to happen. And then it did...