So how many have seen a rainbow when it hasn't rained? Nobody?
And it shall come to pass, when I bring a cloud over the earth, that the bow shall be seen in the cloud:
Genesis 9:14
Nothing in the passage suggests that the cloud must be raining in order to see the rainbow, yet it states that the bow shall be in the cloud.
Since rainbows only appear when the band of visible white light is refracted, thus the multicolored band can only be seen when the refracted light passes before the observer at a specific angle relative to the location where they are observing it.
But then again refracted light does not bow, it merely moves along a different line of travel relative to the angle of its refraction.
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Of course the term 'cloud' has different meanings just as the 'flood' has different meanings in scripture. The cloud is the firmament of gas that was formed withing the frozen waters that covered the entire face of the spherical earth as referenced in Genesis 1:2.
Thus the reason the multicolored band appears as a bow is because of curvature of the earth's atmosphere which extends above the highest mountain upon the spherical earth. Sorry flat earthers,
5 Come and see the works of God: he is terrible in his doing toward the children of men.
6 He turned the sea into dry land:
they went through the flood on foot: there did we rejoice in him.
Psalms 66:5-6
Egypt riseth up like a flood, and his waters are moved like the rivers; and he saith, I will go up, and will cover the earth; I will destroy the city and the inhabitants thereof. Jer 46:8
And after threescore and two weeks shall Messiah be cut off, but not for himself: and the people of the prince that shall come shall destroy the city and the sanctuary;
and the end thereof shall be with a flood, and unto the end of the war desolations are determined.
Dan 9:26
But I digress, as far as the great flood of Noah, before the great day of violence that fell upon the children of men then all one has to do is apply a little common sense and the answer to whether or not it rained before that time is obvious.
25 Who hath divided a watercourse for the overflowing of waters, or a way for the lightning of thunder;
26
To cause it to rain on the earth, where no man is; on the wilderness, wherein there is no man;
27
To satisfy the desolate and waste ground; and to cause the bud of the tender herb to spring forth?
28 Hath the rain a father? or who hath begotten the drops of dew?
Job 38:26-28
But that is just what I hear so take it for what it is worth....