While some Christians have used the colors of the rainbow in interpreting or usurping meaning from the biblical stories, the Bible itself assigns no meaning to the colors. The rainbow appears only twice in the Bible, in the first and last books. Christians feel its first appearance in the story of the flood is special, because the biblical flood story is the only one that features a rainbow. God places a rainbow in the sky as a symbol that the rains have ended and that a flood of such proportions will never come again.Know More
Christian theories about further meaning to the rainbow and its colors primarily center on attempts to present a correlation between the seven colors of the rainbow and the seven days of creation. The rainbow has also been used to draw parallels to light, as God's first creation, and all of the colors of the earth, as reflections in various combination of the colors represented in the rainbow. Graduated further, the point becomes that God gave man light to show us that he encompasses all things. For this same reason, the rainbow is sometimes used as a symbol of Jesus, through whom Christians believe all things are possible.