This is something God referred to in Psalm 1, where human beings who are save by God will sit in "The Judgment." Elsehwere, the Bible references where human beings will judge fallen angels (demons).
God is the ultimate Judge, and the Great White Throne Judgment will be there place to receive their judgment before the Second Death.
But apparently, those saved have some sort of role.
"Therefore the wicked will not stand in the judgment, nor sinners in the assembly of the righteous." Psalm 1:5
"Do you not know that we will judge angels? How much more the things of this life!" 1 Corinthians 6:3
I tend to believe that Paul himself will sit in The Judgment of Barry Hussein Soetoro Barack Obama.
Sorry for the typos.