Lesson from the first letter of St. Paul the Apostle to the Corinthians
1 Cor. 15:51-57
Brethren: Behold, I tell you a mystery: we shall all indeed rise, but we shall not all be changed - in a moment, in the twinkling of an eye, at the last trumpet. For the trumpet shall sound, and the dead shall rise incorruptible and we shall be changed. For this corruptible body must put on incorruption, and this mortal body must put on immortality. But when this mortal body put on immortality, then shall come to pass the word that is written, Death is swallowed up in victory! O death, where is your victory? O death, where is your sting? Now the sting of death is sin, and the power of sin is the Law. But thanks be to God Who has given us the victory through our Lord Jesus Christ.
At that time, Jesus said to the multitudes of the Jews, Amen, amen, I say to you, the hour is coming, and now is here, when the dead shall hear the voice of the Son of God, and those who hear shall live. For as the Father has life in Himself, even so He has given to the Son also to have life in Himself; and He has granted Him power to render judgment, because He is Son of Man. Do not wonder at this, for the hour is coming in which all who are in the tombs shall hear the voice of the Son of God. And they who have done good shall come forth unto resurrection of life; but they who have done evil unto resurrection of judgment.