So then, the way to find out the covenant, what that is, it is to see if we can find out this token of it; to wit, the BOW, of which the rainbow is but a type. I find then by the scriptures, where this BOW is mystically spoken of, that the Lord Jesus Christ himself is encompassed with the bow. The first is this:
"And above the firmament that was over their heads was the likeness of a throne, as the appearance of a sapphire stone: and upon the likeness of the throne was the likeness, as the appearance of a man above upon it. And I saw, as the colour of amber, as the appearance of fire round about within it, from the appearance of his loins even upward, and from the appearance of his loins even downward, I saw as it were the appearance of fire, and it had brightness round about. As the appearance of the bow that is in the cloud in the day of rain, so was the appearance of the brightness round about. This was the appearance of the likeness of the glory of the LORD" (Eze 1:26-28), the man, the Lord's Christ, &c.
The second scripture is this. "I was in the Spirit: and, behold a throne was set in heaven, and one sat on the throne. And he that sat was to look upon like a jasper and a sardine stone: and there was a rainbow round about the throne, in sight like unto an emerald" (Rev 4:2,3). In these two texts there is mention of the rainbow, that was, not to be the covenant, but the token or sign thereof. Now then the covenant itself must needs be the man that was set in the midst of the bow upon the throne; for so he saith by the prophet, "I the LORD have called thee in righteousness, and will hold thine hand, and will keep thee, and give thee for a covenant of the people" (Isa 42:6). The covenant therefore is Jesus Christ the Saviour, whom the bow in the clouds was a sign or a token of. So then the sum of the text is this, That God, for the sake of the Lord Jesus Christ, will not again all the days of the earth, bring an universal judgment upon the creature, as in the days of Noah, and of the old world he did; for Christ by the worth of his blood and righteousness hath pacified the justice of the law for sin. So then the whole universe standeth not upon a bottom of its own, but by the word and power of Christ (Heb 1:2,3). "The earth [said he] and all the inhabitants thereof are dissolved: I bear up the pillars of it" (Psa 75:3).
Quest. But how must Christ be reckoned of God, when he maketh him the poize against all the sin of the world.
The prophet tells us thus: He shall be the covenant of the people, or he shall be accounted the conditions and worth of the world; He shall be the covenant, or works, or righteousness of the people; for, He as the high-priest under the law, is set for the people to Godward; that is, he standeth always in the presence of God, as the complete obedience of the people. So then, so long as the Lord Christ bears up his mediatorship, God in justice will neither destroy the world, nor the things that are therein.
In this covenant therefore, the justice as well as the mercy of God is displayed in its perfection, inasmuch as without the perfection of the mediator Christ, the world could not be saved from judgment.
Ver. 14. "And it shall come to pass, when I bring a cloud over the earth, that the bow shall be seen in the cloud."
By these words the Lord looks back to the flood that before had drowned the earth; for in these clouds there was no bow, no token of Christ, or of the mercy of God. But now, saith God, I will do far otherwise; from henceforth when I bring a cloud, and there be showers of rain on the earth, these clouds shall not be as the other. But "my bow shall be therein."
The cloud then that here is spoken of, must be understood of the judgment of God for sin, like those before, and at the overthrow of the world; only with this difference, they were clouds, judgments without mercy, but these judgments mixed therewith; and often the clouds are thus to be understood. Job when he curseth his day, saith, "Let a cloud dwell upon it" (3:5). So the judgments of God upon Zion, are called the covering of a cloud (Lam 2:1). So in Joel also, to the darkness of clouds, are the judgments of the church compared (2:2); yea, that pillar that went before the children of Israel, it being a judgment to the people of Egypt, goes under this epithet, as a term most fit to express this judgment by, "it was a cloud and darkness to them" (Exo 14:20).
And now to the cloud in hand, the cloud in which is the bow, the cloud of rain, although by the mercy and grace of God it is so great a blessing as it is, yet it sometimes becomes a judgment, it comes for correction, as a rod to afflict the inhabitants of the world withal (Job 37:13). Thus it was in the days of Ezra, and very often both before and since (10:12-14).