The Virus Turns Deadly

Two weeks ago, we talked about sin as being like a virus in a computer system. Sin enters history and human life insidiously, through the tempting of Satan. It then spreads rapidly and becomes destructive. But scariest of all, it turns deadly, and that is descriptive of Genesis 4 - 6:8, closing the first section of Genesis. 
Scripture:  Genesis 4:1-6:8