 That very evening, the disciples got into a boat and they started across the Sea of Galilee toward Capernaum. Soon, a storm came down upon them and the sea grew very rough. If you've ever been to Israel or to the Sea of Galilee, you know it's a very shallow body of water surrounded by mountains. And the mountain currents come down over that body of water and churn it up into a frenzy in just a very short time.