hand of that God, whose wrath is provoked and incensed as much against you as against many of the damned in hell; you hang by a slender thread, with the flames of divine wrath flashing about it, and ready every moment to singe it, and burn it asunder; and you have no interest in any mediator, and nothing to lay hold of to save yourself, nothing to keep off the flames of wrath, nothing of your own, nothing that you ever have done, nothing that you can do, to induce God to spare you one moment…
"you hang by a slender thread" referring to how close you are from being sent into the dooms of Hell rather than Gates of Heaven is more than terrifying. Edwards exaggerates the chance of being sent to Heaven as almost none and chance of being sent to Hell as almost certain. "nothing to lay hold of to save yourself" shows us how Edwards is trying to convince and scare his audience into believing it is an easier guarantee they will live their afterlife in Hell because God does not forgives those who sin against him.