acts 17:31 Because he hath appointed a day, in the which he will judge the world in righteousness by that man whom he hath ordained; whereof he hath given assurance unto all men, in that he hath raised him from the dead. - Free Bible Online

      31. Because he hath appointed a day in the which he will judge the world--Such language beyond doubt teaches that the judgment will, in its essence, be a solemn judicial assize held upon all mankind at once. "Aptly is this uttered on the Areopagus, the seat of judgment" [BENGEL].
      by that man whom he hath ordained--compare Joh 5:22, 23, 27; Ac 10:42.
      whereof he hath given assurance unto all men, in that he hath raised him from the dead--the most patent evidence to mankind at large of the judicial authority with which the Risen One is clothed.

JFB.