What is this "sin" thing?

JEREMIAHHHH WUZZ A BULLLFRAAWWWG...

Jeremiah 30: 12-15 says this:

12"This is what the Lord says: Yours is an incurable bruise, a terrible wound. 13There is no one to help you or bind up your injury. You are beyond the help of any medicine. 14All your allies have left you and do not care about you anymore. I have wounded you cruelly, as though I were your enemy. For your sins are many, and your guilt is great. 15Why do you protest your punishment - this wound that has no cure? I have had to punish you because your sins are many and your guilt is great."

This explains this whole "sin" thing very well. Here are the core bullets behind what he's saying. Sin is:

-incurable
-we have no help
+because no one cares
+and because no one CAN help.
+therefore we are alone and isolated, except for God
-our sin makes us deserving of punishment
+because the wages of sin is death.

No one can influence your soul but God, because we're isolated like I said above. Christ stood by who He said He was, so that you might believe in what He said. He took His claim to the grave with Him. The magnitude of the claim is such that you cannot afford to ignore it. If you don't believe Christ is the Son of God, then you had better be 100% sure that He doesn't exist before you say that. The magnitude of the claim is huge! I'm quoting Tim Keller here.