"The blood, saith God, [of the Lamb,] shall be to you for a token upon the houses where ye are: and when I see the blood I will pass over you, and the plague shall not be upon you, to destroy you, when I smite the land of Egypt" (Exo 12:13).
"And I will look upon it that I may remember." Not that God is forgetful, "He is ever mindful of his covenant." But such expressions are used to shew and persuade us that the whole heart and delight of God is in it. "That I may remember the everlasting covenant." This word covenant is also the sixth repetition thereof; my covenant, the covenant, a covenant, and the everlasting covenant. O how fain would God beat it into the heads of the world, that he hath for men a covenant of grace.
"The everlasting covenant." Because the parties on both sides are faithful, perfect, and true; the Father being the one, and the Son of his love the other; for this covenant, as I said before, is not a compact and agreement betwixt God and the world, but his Son, as his gift to men, is set for them to Godward (Zech 9:11). So that what conditions there are, they are perfectly found in Christ, by whose blood the covenant is sealed and established, and indeed becomes everlasting, hence it is called "the blood of the everlasting covenant" (Heb 13:20). And again, the New Testament is said to be in this blood. Besides, the promises are all in Christ, I mean the promises of this covenant; in him they are yea, and in him amen, to the glory of God the Father: now they being all in him, and yea and amen no where else, the covenant itself must needs be of pure grace and mercy, and the bow in the cloud, not qualifications in us, [but] the proper token of this covenant.
Ver. 17. "And God said unto Noah, This is the token of the covenant, which I have established between me and all flesh that is upon the earth."
Behold a repetition of all things that were essential either to the covenant itself, or to our faith therein, the making of the covenant, the looking on the covenant, and the token of the covenant; how often are they mentioned, that we might be more fully convinced of the unchangeable nature of it. As Joseph said unto Pharaoh, "For that the dream was doubled unto Pharaoh twice, it is because the thing is established by God" (Gen 41:32).
"And God said unto Noah." Where God loveth, he delighteth to apply himself to such, in a more than general way; he singleth out the person, Noah, Abraham, and the like. "I know thee by name," saith he to Moses, and "thou hast found grace in my sight."
"This is the token of the covenant." It still wants beating into people's heads, where they should look for the covenant itself, to wit, the throne which the rainbow compasseth round about; for that is the token of the presence of the Messias, and thither we are to look for salvation from all plagues, and from all the judgments that are due to sin: The Lord for Christ's sake forgave you, this is the token of the covenant.
"Of the covenant which I have established."
This word "I," as also hinted before, doth intimate that this covenant is the covenant of grace and mercy, for a covenant of works cannot be established; that is, settled between God and men, before both parties have either by sureties, or performance ratified and confirmed the same. Indeed it may be so established, as that God will appoint no other; but to be so established, as to give us the fruits thereof, that must be the effects of his being well pleased with the conditions of those concerned in the making thereof. But that is not the world, but the Son of God, and therefore it is called his covenant, and he "as given to us of God," is so reckoned our condition and worth (Zech 9:11).
"Which I have established." To wit, upon better promises than duties purely commanded, or than the obedience of all the angels in heaven. I have established it in the truth and faithfulness, in the merit and worth of the blood of my Son, of whom the rainbow that you see in the cloud is a token.