Mazal Kislev Keshes
The astrological sign of the month of Kislev is the bow, like the
rainbow which is seen in the sky when rain falls on a sunny day.
Indeed, the first rainbow which was seen after the Flood, appeared
in the month of Kisiev. The verse (Bereshls 9:12-13) states: And God
said, this is the sign of the covenant which I have given between Me and you and between every living thing that is with you for etemity. I have placed My bow in the heavens and it shaII be a sign of the covenant between Me and earth. These words were said to No'ach either at the beginning or towards the middle of the month of Kislev.
When Kislev began, No'ach was blessed by God: he was permitted to eat meat; the shedding of human blood was forbidden; and God struck a covenant of life with him and showed him the rainbow.
From The Book of Our Heritage by Eliyahu Kitov. Feldheim Publishers, New York.