The Bible says, "As it is appointed for men to die once, but after that the judgment" [Hebrews 9:27]. 

Once born into this world, we are all bound to die once. The question of whether or not we would be condemned for our sins afterward is answered by checking ourselves to see whether or not we believe in the true Gospel. This will determine if we find ourselves as children of God, or find ourselves as the children of wrath.

Those who do no believe have already condemned themselves for not believing in the name of the only begotten Son of God who has saved mankind from sin. If they continue to be unrepentant, they will not be able to escape from the judgment of God.