If the Exodus is simply about redemption, then God is terribly inefficient. The point isn’t simply redemption, but renown. God could’ve taken Pharaoh out with one punch, but He reserves His strength for ten blows, so that He might more fully display his power.
For by now I could have put out my hand and struck you and your people with pestilence, and you would have been cut off from the earth. But for this purpose I have raised you up, to show you my power, so that my name may be proclaimed in all the earth (Exodus 9:15–16).
In a boxing match if some no-name opponent is knocked out with one blow, the crowd might think it was owing more to the weakness of the loser than the strength of the winner. But if some unknown boxer waits patiently for the “greatest” to climb to the pinnacle of his career, and then, having challenged him, slowly defeats him, one punch each round, while never suffering a blow himself, then his supremacy is fully demonstrated.
God raised Pharaoh up for this purpose. This is why Pharaoh exists. You can’t soften the meaning.
For the Scripture says to Pharaoh, ‘For this very purpose I have raised you up, that I might show my power in you, and that my name might be proclaimed in all the earth.’ So then he has mercy on whomever he wills, and he hardens whomever he wills. You will say to me then, ‘Why does he still find fault? For who can resist his will?’ But who are you, O man, to answer back to God? Will what is molded say to its molder, ‘Why have you made me like this?’ Has the potter no right over the clay, to make out of the same lump one vessel for honorable use and another for dishonorable use? What if God, desiring to show his wrath and to make known his power, has endured with much patience vessels of wrath prepared for destruction, in order to make known the riches of his glory for vessels of mercy, which he has prepared beforehand for glory (Romans 9:17–23).
God’s redemption is for renown. God’s wrath is for renown. God purposes to be glorified in all: vessels of mercy and vessels of wrath. But, the supreme way God intends for His glory to be communicated is in redemption. Wrath falls “in order to make known the riches of his glory for vessels of mercy.”
It is a proper and excellent thing for infinite glory to shine forth; and for the same reason, it is proper that the shining forth of God’s glory should be complete; that is, that all parts of his glory should shine forth, that every beauty should be proportionably effulgent, that the beholder may have a proper notion of God. It is not proper that one glory should be exceedingly manifested, and another not at all; for then the effulgence would not answer the reality. For the same reason it is not proper that one should be manifested exceedingly, and another but very little. It is highly proper that the effulgent glory of God should answer his real excellency; that the splendour should be answerable to the real and essential glory, for the same reason that it is proper and excellent for God to glorify himself at all.
Thus it is necessary, that God’s awful majesty, his authority and dreadful greatness, justice, and holiness, should be manifested. But this could not be, unless sin and punishment had been decreed; so that the shining forth of God’s glory would be very imperfect, both because these parts of divine glory would not shine forth as the others do, and also the glory of his goodness, love, and holiness would be faint without them; nay, they could scarcely shine forth at all. If it were not right that God should decree and permit and punish sin, there could be no manifestation of God’s holiness in hatred of sin, or in showing any preference, in his providence, of godliness before it. There would be no manifestation of God’s grace or true goodness, if there was no sin to be pardoned, no misery to be saved from.
How much happiness soever he bestowed, his goodness would not be so much prized and admired, and the sense of it not so great, as we have elsewhere shown. We little consider how much the sense of good is heightened by the sense of evil, both moral and natural. And as it is necessary that there should be evil, because the display of the glory of God could not but be imperfect and incomplete without it, so evil is necessary, in order to the highest happiness of the creature, and the completeness of that communication of God, for which he made the world; because the creature’s happiness consists in the knowledge of God, and sense of his love. And if the knowledge of him be imperfect, the happiness of the creature must be proportionably imperfect; and the happiness of the creature would be imperfect upon another account also; for, as we have said, the sense of good is comparatively dull and flat, without the knowledge of evil. —Jonathan Edwards
No Other Boast 