Jesus explains the events on the Last Day when he returns for the Day of Judgment (Matthew 24:1-3, 30), saying:
“When the Son of man shall come in his glory, and all the holy angels with him, then shall he sit upon the throne of his glory: And before him shall be gathered all nations: and he shall separate them one from another, as a shepherd divideth his sheep from the goats: And he shall set the sheep on his right hand, but the goats on the left. Then shall the King say unto them on his right hand, Come, ye blessed of my Father, inherit the kingdom prepared for you from the foundation of the world” (Matthew 25:31-34).
“Then shall he say also unto them on the left hand, Depart from me, ye cursed, into everlasting fire, prepared for the devil and his angels: And these shall go away into everlasting punishment: but the righteous into life eternal” (Matthew 25:41, 46).
“And, behold, I come quickly; and my reward is with me, to give every man according as his work shall be” (Revelation 22:12).