The story of Noah's ark is told in the Book of Genesis. It says God saw how corrupt the Earth had become and decided to "bring floodwaters on the Earth to destroy all life under the heavens." God is said to have told Noah, an honorable man, to build an ark 450 feet (137 meters) long, 75 feet (23 meters) wide, and 45 feet (14 meters) high, and fill it with two of every species on the Earth. It reportedly rained for 40 days and 40 nights. After about seven months, the waters receded, and the ark came to rest, according to the Bible.