‘The end of the world‘ signifies not the annihilation of the world, but its transformation. Everything will be transformed suddenly, in the twinkling of an eye…. And the Lord will appear in glory on the clouds. Trumpets will sound, and loud, with power! They will sound in the soul and conscience! All will become clear to the human conscience. The Prophet Daniel, speaking of the Last Judgment, relates how the Ancient of Days, the Judge, sits on His throne, and before Him is a fiery stream (Dan. 7:9-10). Fire is a purifying element; it burns sins. Woe to a man if sin has become a part of his nature: then the fire will burn the man himself. This fire will be kindled within a man; seeing the Cross, some will rejoice, but others will fall into confusion, terror, and despair. Thus will men be divided instantly. The very state of a man’s soul casts him to one side or the other, to right or to left.
—Dr. Alexander Kalomiros (The River of Fire)