“When the Son of man comes in his glory, and all the angels with him, then he will sit on his glorious throne. Before him will be gathered all the nations, and he will separate them one from another as a shepherd separates the sheep from the goats, and he will place the sheep at his right hand, but the goats at the left.” (Matthew 25:31-32)
The Holy Bishop Nikolai Velimirovich (d. 1956) tells us:
“He came one; He will come again. The first time He came in humility; the second time He will come in glory. The first time He came as the Redeemer of the world; the second time He will come as the Judge of the world. The difference between His first and second coming is very great. During His first coming He spent thirty-three years on earth. His second coming will last a very short time. ‘For as the lightning comes from the east and shines as far as the west, so will be the coming of the Son of man,’ as He himself said about His own second coming (Matt. 24:27). Thus the second coming of the Lord will be unexpected and as quick as lightning. Hence, He gave this warning to all the faithful: ‘Watch therefore, for you do not know at which hour you Lord will come’ (Matt 24:42). The first time He came as a painstaking sower; the second time He will come as a swift winnower. And just as winnowing is a brief task compared to the many tasks involving crops from the time of sowing to the time of winnowing, so shall be His second coming, when compared to the first, be swift and brief. Oh, and how unexpected it will be! Therefore, vigilance is demanded of you, along with alertness of spirit, watchfulness, and expectation.” (The Faith of the Chosen People, pgs. 56-57)