Rainbow flag in his hand. In the German Peasants' War of the 16th century, the rainbow flag together with the peasants' boot ("Bundschuh") was used as the sign of a new era, of hope and of social change. The choice of the rainbow in the form of a flag harkens back to the rainbow as a symbol of biblical promise. According to the Bible, God first created the rainbow as a sign to Noah that there would never again be a worldwide flood, also known as the Rainbow covenant. The South African flag is sometimes referred to as the "Rainbow flag". Rainbow
Genesis flood narrative of Noah's six hundred and first year the earth was dry. Then Noah built an altar and made a sacrifice, and God made a covenant with Noah that man would be allowed to eat every living thing but not its blood, and that God would never again destroy all life by a flood. The flood is a reversal and renewal of God's creation of the world. In Genesis 1 God separates the "waters above the earth" from those below so that dry land can appear as a home for living things, but in the flood story the "windows of heaven"