Figuratively speaking, the wrath of God is a consuming fire. Divine wrath will be far more terrible than its symbol. Actually, the furnace is figurative so far as the soul is concerned, literal as it pertains to the body. After all, it takes real fire to burn the heavens and earth in the great conflagration, which is hell. Edwards took this to be a rhetorical question.
Future punishment is contrary neither to Scripture nor reason.
Immediately upon the finishing the judgment and the pronouncing that sentence will come the end of the world. Then the frame of this world shall be dissolved. The pronouncing of that sentence will probably be followed lowed with amazing thunders that shall rend the heaven and shake the earth out of its place. Now it is the reverse. They will see them mount up to meet the Lord in the air, be received, seated at his right hand, and crowned.