The wicked are haunted by terrors which never leave him entirely so that he is unable to ever be completely at peace. He wants to lie down and forget about them but when he tries to do so, they force their way into his mind and he is compelled in anxiety to get to his feet and look around him, and prepare for the next invasion of his tranquillity.
Why is death called the king of terrors? Because it is a door through which we pass without hope of return if we do not know Jesus Christ as Lord and Saviour. It is irreversible. It is the entrance into the presence of the living God, who has in store unlimited fears to punish the wicked. It is the end of all comfort, the end of all mercy, the end of common grace, and the end of all hope. It is exposure to one who is infinitely stronger than us, whose anger burns forever. The time of putting for accountability to God is over. We will hear his verdict, and the warning in our hearts tells us that it is something greatly to fear. It is the place of utter powerlessness for man. He cannot resist being taken by it; he has no defence against it. There are no friends waiting for him, but only others who are equally under its power. It is the place where nothing can be hidden, but where we stand naked before God. All the enmity of our hearts to God will be exposed, and cannot be denied. They will see that God is implacable towards them. All appeals to his mercy will be met with a determination to refuse that can never be broken.