Which quotation from "Sinners in the Hands of an Angry God" indicates that people have a fragile hold on life?
Yea, God is a great deal more angry with great numbers that are now on earth; yea, doubtless with many that are now in this congregation . . . than he is with many of those that are now in the flames of hell.
[T]he pit is prepared, the fire is made ready, the furnace is now hot, ready to receive them, the flames do now rage and glow.
Unconverted men walk over the pit of hell on a rotten covering, and there are innumerable places in this covering so weak that they won't bear their weight, and these places are not seen.
God is dreadfully provoked, his anger is as great towards them as to those that are actually suffering the executions of the fierceness of his wrath in hell.