You do realize, those "accursed" that are being described here, are those that he says "I never knew you" to, right? What does he mean by "I never knew you"?
Rom 8:28 And we know that all things work together for good to them that love God, to them who are the called according to his purpose.
Rom 8:29 For whom he did foreknow, he also did predestinate to be conformed to the image of his Son, that he might be the firstborn among many brethren.
Rom 8:30 Moreover whom he did predestinate, them he also called: and whom he called, them he also justified: and whom he justified, them he also glorified.
The group that he is saying that are accursed, are those he never foreknew, because they were not predestined to be God's elect, and thus, not in the first resurrection, and not kings and priests.
Look here:
Mat 25:31 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:
Mat 25:32 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:
Mat 25:33 And he shall set the sheep on his right hand, but the goats on the left.
Mat 25:34 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:
Eph 1:3 Blessed be the God and Father of our Lord Jesus Christ, who hath blessed us with all spiritual blessings in heavenly places in Christ:
Eph 1:4 According as he hath chosen us in him before the foundation of the world, that we should be holy and without blame before him in love:
Those chosen from the foundation of the world, are God's elect. They are the first fruits. They are special to God, and they will reign with him, because they are going to be his kings and priests, which he already decided upon, from the foundation of the world.
If you don't believe what the scriptures say about God choosing who will be in the first resurrection, then don't quote that scripture at me.