Edwards says -
"Almost every natural man that hears of hell, flatters himself that he shall escape it; he depends upon himself for his own security; he flatter himself in what he has done, in what he is now doing, or what he intends to do"
Edwards wasn't just preaching to the non Christian here, but also the Christian. Do we flatter ourselves in thinking that our works get us out of hell? That God owes us grace and freedom because of what we are doing right now? Edwards warns us against this and warns us to repent of this because - "God has laid himself under no obligation, by any promise to keep any natural man out of hell for one moment...till he believes in Christ."
It is only in Christ that we have any promise of eternal life with God. It can only rest in Christ and nothing more. If we think for one moment that its our doing and God owes us, we will be in for a shock. Read this amazing sermon and let your heart see how gracious God is over your life and repent and start relying on Christ for your salvation instead of who you are and what you are doing. Read it here.