OT § 17

And his Lord spoke to [Noah], as he desired that Noah hear, "Because of your righteousness, a remnant was preserved and did not perish in that flood that took place. And because of your sacrifice that was from all flesh and on behalf of all flesh, I will never again bring a flood upon the earth." God thus bound himself beforehand by this promise so that even if mankind were constantly to follow the evil thoughts of their inclination, he would never again bring a flood upon them.

God's purpose, therefore, was to eliminate all apprehension from Noah's thinking and for him to be quite assured that this would not happen again. He said, remember, "Just as I brought on the deluge out of love, so as to put a stop to their wickedness and prevent their going to further extremes, so in this case too it is out of my love that I promise never to do it again, so that you may live free of all dread and in this way see your present life to its close." Hence he said, "Behold, I make my covenant," that is, I form an agreement. Just as in human affairs when someone makes a promise he forms an agreement and gives a firm guarantee, so too the good Lord said, "Behold, I make my covenant." God did not say that this massive disaster might come again to those who sin. Rather he said, "Behold, I make my covenant with you and your offspring after you." See the Lord's loving kindness: not only with your generation, he says, do I form my agreement, but also in regard to all those coming after you I give this firm guarantee.

God also said to Noah and to his sons with him: Behold, I will establish my covenant with you, and with your offspring after you, and continuing until he says: Never again shall all flesh be cut off by the waters of the flood; nor shall there ever again be a flood to destroy the earth. The meaning of the letter is clear, because the world need no longer fear the judgment of water, but of fire, and the frequent repetition rebukes and condemns the heresy of Origen, who presumed to dogmatize the cycles of infinite ages always running in the same order. Mystically, however, the water of the flood not returning to the earth signifies that the water of baptism, once received, cannot be repeated; for he who has been washed does not need to wash again, as the Lord himself testifies (John 13:10), and those who have been washed once in the waters of tribulations and reached eternal salvation are no longer to be cleansed in the same waters, but will joyfully sing to their Redeemer forever: We went through fire and water, and you brought us to a place of abundance (Psalm 66:12). Nor indeed should the meaning of the saving bath seem contrary to what is said about the waters of the flood above: Never again will I curse the ground because of man; or what is said here: Never again will there be a flood to destroy the earth, since the water of baptism is not accustomed to bring a curse or destruction to our mind or body, but rather blessing and health; but it is to be understood that the Lord in baptism in a certain way curses our old conduct, and destroys it when he commands us to renounce the devil and all his works and pomps; and thus, having been cleansed with a new confession, we may be worthy to attain the grace of eternal blessing.

After these things God made a covenant with Noah and with all those who came out of the ark with him, saying, "All flesh shall never again perish in the waters of a flood. I will set my bow in the clouds, and it shall be a sign of the eternal covenant between God and all flesh that is on the earth."

I will place my bow in the clouds, and it will be a sign of the covenant between me and the earth; and when I cover the sky with clouds, my bow will appear, and I will remember my covenant with you and with every living soul that is alive in the flesh, and the waters will no longer become a flood to destroy all flesh. The bow in the sky, whenever it is seen even today, reminds us of the divine covenant that the earth will no longer be lost in a flood; but if it is well considered, it also shows us a sign of future judgment that will come upon the world by fire. For indeed, it shines with both blue and red color not without reason, except because the blue color testifies about the waters that have passed, and the red color testifies about the flames that are to come. Fittingly, the celestial bow, which they call Iris, is placed as a sign of divine propitiation; for that bow tends to shine in the clouds, and responds in a somewhat grateful confession to the rays of the sun that illuminate the dewy darkness. Therefore, Christ is the Sun of righteousness, the clouds illuminated by Him are the saints, whose names are written in heaven, and the Psalmist speaks of them: Lord, your mercy is in heaven, and your truth reaches to the clouds (Psalm 35:6). And when the bow appears in the clouds, the Lord remembers His promise not to destroy the earth with a flood, because through the intercessions of the saints, who know how to shine not by themselves, but through Him, He is propitiated towards the faithful when they lift up the eyes of their minds to desire heavenly things, and they recognize His glory in the deeds and words or even the rest of the preceding just ones, as if in His clouds, there will be a bow in the clouds, and I will see it and remember the eternal covenant that was made between God and every living soul of all flesh that is upon the earth. It is said in a human manner that God remembers His covenant when He sees the bow in the clouds, which by the merits of the saints, glorified and heavenly through His illumination, He spares and has mercy on our frailty; but He does not newly remember anything since He can never forget anything. He has been mindful of His covenant forever, but He seems to remember the covenant He made with us when He extends the help of His protection to those in tribulation; hence, it is well said in the psalm from the persona of some afflicted individuals, to whom divine aid seemed delayed: Why do you turn your face away, do you forget our poverty and our tribulation (Psalm 43:24)?

In the mystery of the cleansing of crimes, Christ is symbolized by the bow in the clouds, which is the sign of the covenant.

Who "binds up the water in the clouds"? The miracle of it—that he sets something whose nature is to flow, on clouds, that he fixes it there by his word! Yet he pours out some of it on the face of the whole earth, sprinkling it to all alike in due season. He does not unleash the entire stock of water—the cleansing of Noah's era was enough, and God most true does not forget his own covenant.