6 Look at what follows: “Now,” He says, “is the judgment of the world.” What, then, are we to expect at the end of time? But the judgment that is looked for in the end will be the judging of the living and the dead, the awarding of eternal rewards and punishment. Of what sort, then, is the judgment now? I have already, in former lessons, as far as I could, put you in mind, beloved, that there is a judgment spoken of, not of condemnation, but of discrimination; as it is written, “Judge me, O God, and plead [discern, discriminate] my cause against an unholy nation.” And many are the judgments of God; as it is said in the psalm, “Your judgments are a great deep.” And the apostle also says, “O the depth of the riches of the wisdom and the knowledge of God!
How unsearchable are His judgments!” To such judgments does that spoken of here by the Lord also belong, “Now is the judgment of this world;” while that judgment in the end is reserved, when the living and the dead shall at last be judged. The devil, therefore, had possession of the human race, and held them by the written bond of their sins as criminals amenable to punishment; he ruled in the hearts of unbelievers, and, deceiving and enslaving them, seduced them to forsake the Creator and give worship to the creature; but by faith in Christ, which was confirmed by His death and resurrection, and, by His blood, which was shed for the remission of sins, thousands of believers are delivered from the dominion of the devil, are united to the body of Christ, and under this great head are made by His one Spirit to spring up into new life as His faithful members.
This it was that He called the judgment, this righteous separation, this expulsion of the devil from His own redeemed.
Source: Tractates on the Gospel of John (New Advent)