This is the sign of the covenant which I have established between Me and all flesh that is on the earth.
- Genesis 9:17, NKJV
“I have set my rainbow in the clouds, and it will be the sign of the covenant between me and the earth. . . . Never again will the waters become a flood to destroy all life” (Gen. 9:12-16, NIV).
Even as God spoke, the sunlight may have broken through the boiling clouds and pounding rain, producing a breathtakingly beautiful arch of colors stretching from one peak to another. As God explained to Noah the meaning of the rainbow, surely peace and gratitude flooded Noah’s heart as he knew, based on God’s Word alone, that he was safe and secure.
God gave Noah the sign of a rainbow to symbolize His covenant. When the thunder clouds rolled and the rain began to fall and Noah was consciously aware of sin in his life and the lives of others, he was to look up and see the rainbow. The purpose was not for him to remember God’s covenant but to remember that God remembered His commitment to humanity. And God remembers that He is still committed to us.
From God's Story