The rainbow holds significant mythical meaning in various cultures. In many traditions, it symbolizes a bridge between the earth and the divine. For example, in Christianity, it represents God's promise to Noah after the flood, signifying hope and renewal. In Native American cultures, rainbows often symbolize harmony and the interconnectedness of all life. Similarly, in Chinese mythology, the rainbow can represent balance between opposing forces. Overall, the rainbow serves as a powerful symbol of transition, promise, and a connection between different realms of existence.