[Judaic] God gave the rainbow to the world as a sign of his promise that he would graciously never again destroy the world (Gen. 9). When Moses ascended Mount Sinai, the rainbow took off its garment and gave it to him to protect him as he interacted with God (Zohar 2:99a). Elijah will test the righteousness of individuals by asking if they have ever seen a rainbow; because the truly pious sustain the world on his, or her, own merit such a person never actually sees one. A particularly splendid rainbow will herald of the Messiah.
RAINBOW
Meaning of RAINBOW in English
Encyclopedia Mythica English dictionary. Английский энциклопедический словарь греческой мифологии. 2012