Charles Spurgeon Commentary Genesis 9:16

"And the bow shall be in the cloud; and I will look upon it, that I may remember the everlasting covenant between God and every living creature of all flesh that is upon the earth." — Genesis 9:16 (ASV)

That I may remember the everlasting covenant between God and every living creature of all flesh that is upon the earth.

So, when my eye of faith is dim, and I cannot see the covenant sign, I will remember that there is an eye which never can be dim, which always sees the covenant token; and so I shall still be secure notwithstanding the dimness of my spiritual vision. For our comfort, we must see it; but for our safety, blessed be God, it is only needful that he should see it.