“And before him will be gathered all the nations, and he will separate them one from another, as the shepherd separates the sheep from the goats.”
From His throne He surveys ‘all nations'. These include the ‘all nations' who have hated His disciples and followers throughout the age (Matthew 24:9), and the ‘all nations' who have been evangelised prior to His coming (Matthew 24:14) and have been ‘discipled' (Matthew 28:19). Thus, as with those verses it has in mind individuals, and it includes the living and the dead. Now His voice has spoken and the dead have come from their graves to receive either life or judgment (John 5:28-29). It includes the nations who had been waiting in their tomb worlds for this time (Ezekiel 32:17-32), and the righteous raised from the dust of the earth (Isaiah 26:19; Daniel 12:2-3) which also at the same time includes the unrighteous (Daniel 12:2). For at His coming the dead in Christ are raised, and the living are transformed (1 Thessalonians 4:16-17).