Genesis also tells the story of Noah and the flood. Noah was a good man, but most people at the time he lived were behaving very badly indeed. God was sad because of the violent ways people treated each other, and so God told Noah to build an ark -- a kind of ship -- and to take his family, along with two of every kind of animal, into the ark. Then it rained for 40 days and 40 nights, and the earth was flooded with water. Only Noah's family and the animals he brought on board survived. Then the rain stopped, the sun shone, the earth dried out, and Noah's family and all the animals went out of the ark onto dry land. God blessed them, and to symbolize the promise never to flood the whole earth again, God said, "I set my rainbow in the clouds and it shall be a sign of the Covenant between me and the earth." Every time we see a rainbow, we can remember God’s blessing of the Earth and all its creatures.