The Necessity of Repentance While We are on Earth

As long, therefore, as we are upon earth, let us practise repentance, for we are as clay in the hand of the artificer. For as the potter, if he make a vessel, and it be distorted or broken in his hands, fashions it over again; but if he have before this cast it into the furnace of fire, can no longer find any help for it: so let us also, while we are in this world, repent with our whole heart of the evil deeds we have done in the flesh, that we may be saved by the Lord, while we have yet an opportunity of repentance. For after we have gone out of the world, no further power of confessing or repenting will there belong to us.

And as it is appointed unto men once to die, but after this the judgment:

(Hebrews 9:27)