Nicene and Post-Nicene Fathers, Vol. II:
On Christian Doctrine: Chapter 19

Chapter 19.—Bodily and Spiritual Death and Resurrection.

18.  Furthermore, as there is a kind of death of the soul, which consists in the putting away of former habits and former ways of life, and which comes through repentance, so also the death of the body consists in the dissolution of the former principle of life.  And just as the soul, after it has put away and destroyed by repentance its former habits, is created anew after a better pattern, so we must hope and believe that the body, after that death which we all owe as a debt contracted through sin, shall at the resurrection be changed into a better form;—not that flesh and blood shall inherit the kingdom of God (for that is impossible), but that this corruptible shall put on incorruption, and this mortal shall put on immortality. 1731   And thus the body, being the source of no uneasiness because it can feel no want, shall be animated by a spirit perfectly pure and happy, and shall enjoy unbroken peace.

Footnotes

1 Cor. 15.50-53.