Why is Hell considered a permanent situation?

Jesus taught that we undergo a judicial process before being sent to Hell during our earthly lifetimes. > Mt 5:22 But I say unto you, That whosoever is angry with his brother without a cause shall be in danger of the judgment: and whosoever shall say to his brother, Raca, shall be in danger of the council: but whosoever shall say, Thou fool, shall be in danger of hell fire. Then He said we would remain there until we set things right. > Mt 5:26 Verily I say unto thee, Thou shalt by no means come out thence, till thou hast paid the uttermost farthing.