8 Then God spoke to Noah and his sons: 9 "I'm setting up my covenant with you including your children who will come after you, 10 along with everything alive around you - birds, farm animals, wild animals - that came out of the ship with you. 11 I'm setting up my covenant with you that never again will everything living be destroyed by floodwaters; no, never again will a flood destroy the Earth."
12 God continued, "This is the sign of the covenant I am making between me and you and everything living around you and everyone living after you. 13 I'm putting my rainbow in the clouds, a sign of the covenant between me and the Earth. 14 From now on, when I form a cloud over the Earth and the rainbow appears in the cloud, 15 I'll remember my covenant between me and you and everything living, that never again will floodwaters destroy all life. 16 When the rainbow appears in the cloud, I'll see it and remember the eternal covenant between God and everything living, every last living creature on Earth." 17 And God said, "This is the sign of the covenant that I've set up between me and everything living on the Earth."
Matthew Henry's Commentary on Genesis 9:8-17
Commentary on Genesis 9:8-17
(Read Genesis 9:8-17)
As the old world was ruined, to be a monument of justice, so this world remains to this day a monument of mercy. But sin, that drowned the old world, will burn this. Articles of agreement among men are sealed, that what is promised may be the more solemn, and the doing of what is covenanted the more sure to mutual satisfaction. The seal of this covenant was the rainbow, which, it is likely, was seen in the clouds before, but was never a seal of the covenant till now it was made so. The rainbow appears when we have most reason to fear the rain prevailing; God then shows this seal of the promise, that it shall not prevail. The thicker the cloud, the brighter the bow in the cloud. Thus, as threatening afflictions abound, encouraging consolations much more abound. The rainbow is the reflection of the beams of the sun shining upon or through the drops of rain: all the glory of the seals of the covenant are derived from Christ, the Sun of righteousness. And he will shed a glory on the tears of his saints. A bow speaks terror, but this has neither string nor arrow; and a bow alone will do little hurt. It is a bow, but it is directed upward, not toward the earth; for the seals of the covenant were intended to comfort, not to terrify. As God looks upon the bow, that he may remember the covenant, so should we, that we may be mindful of the covenant with faith and thankfulness. Without revelation this gracious assurance could not be known; and without faith it can be of no use to us; and thus it is as to the still greater dangers to which all are exposed, and as to the new covenant with its blessings.