yea and amen. But surely they have no interest in the promises of the covenant of grace who are not the children of the covenant, who do not believe in any of the promises, and have no interest in the Mediator of the covenant.

Also this comment:

The devil is waiting for them, hell is gaping for them, the flames gather and flash about them, and would fain lay hold on them, and swallow them up; the fire pent up in their own hearts is struggling to break out: and they have no interest in any Mediator, there are no means within reach that can be any security to them. In short, they have no refuge, nothing to take hold of; all that preserves them every moment is the mere arbitrary will, and uncovenanted, unobliged forbearance of an incensed God.

All the above passages are intended to instill in Edward's hearers that they have sinned grievously against an angry God who has the ability and inclination to cast them into the torments of hell; but he forbears only because he chooses to forbear; it is nothing that they have earned or deserve. It is no small wonder that after Edwards completed the Sermon, which he read calmly and dispassionately from the pulpit, several minutes were required to calm the congregation before the final hymn could be commenced. If you read the text of the sermon, which is in the link posted below, you will find abundant colorful language intended to provoke emotion--and which successfully did so.

It seems to me that one of the strongest examples of repetition in the sermon is the presence of an angry vision of God.  Edwards repackages this idea in different forms.  The title, itself, is representative of this in the idea that human beings have sinned to the point where God is angry.  Eventually, Edwards argues that "their foot shall slide in due time" from Deuteronomy 32:35.  It is in this basic idea that Edwards is able to repeat the ideas of human sin and God's anger.  The turning away from God and embrace of commerce and a secular life is what Edwards features prominently, almost to the point of restating it repeatedly to make his point.  When Edwards seeks to repeat the idea of human beings turning from God, he links this to death and the lack of spiritual salvation, something that he uses many times in the sermon to instill a sense of fear in the listener.  In terms of God's anger, Edwards has to repeat this in different forms.  His vivid descriptions of both Hell and the life of the spiritually wicked, according to Edwards, represents why God is angry, something that he re-describes in multiple ways and images to bring forth his point of scaring his listeners into a type of intensely forced contrition.