The story of Noah's Ark, according to chapters 6 to 9 in the Book of Genesis, begins with God observing mankind's evil behavior and deciding to flood the earth and destroy all life. However, God found one good man, Noah, "a righteous man, blameless among the people of his time", and decided that he would save him. God instructs Noah to make an ark for his family and for representatives of the world's animals and birds.
Noah and his family and the animals entered the Ark, and "on the same day all the fountains of the great deep were broken up, and the windows of heaven were opened, and the rain was upon the earth forty days and forty nights". The flood covered even the highest mountains to a depth of more than 6 metres (20 ft), and all creatures died; only Noah and those with him on the Ark were left alive.
At the end of 150 days the Ark came to rest on the mountains of Ararat. For 150 days again the waters receded, and the hilltops emerged. Noah sent out a raven which "went to and fro until the waters were dried up from the earth". Next, Noah sent a dove out, but it returned having found nowhere to land. After a further seven days, Noah again sent out the dove, and it returned with an olive leaf in its beak, and he knew that the waters had subsided. Noah waited seven days more and sent out the dove once more, and this time it did not return. Then he and his family and all the animals left the Ark, and Noah made a sacrifice of one of each of the "clean" animals to God, and God resolved that he would never again curse the ground because of man, nor destroy all life on it in this manner. Man in turn was instructed never to eat any animal which had not been drained of its blood.
In order to remember this promise, God put a rainbow in the clouds, saying, " ...