12:31 Now is the judgment of this world. Now, this hour, the hour referred to in Joh 12:23,27. This was the hour for which he had come into the world, the hour of the cross; that was to be the hour of judgment, the crisis, which should determine who should rule the world. The cross became a throne. It gave him the crown.
Now shall the prince of this world be cast out. The cross cast him out, dethroned him; he is now a usurper and shall finally be cast into the lake of fire (Re 20:10).
12:31 Now - This moment. And from this moment Christ thirsted more than ever, till his baptism was accomplished. Is the judgment of this world - That is, now is the judgment given concerning it, whose it shall be. Now shall the prince of this world - Satan, who had gained possession of it by sin and death, be cast out - That is, judged, condemned, cast out of his possession, and out of the bounds of Christ's kingdom.
12:27-33 The sin of our souls was the troubled of Christ's soul, when he undertook to redeem and save us, and to make his soul an offering for our sin. Christ was willing to suffer, yet prayed to be saved from suffering. Prayer against trouble may well agree with patience under it, and submission to the will of God in it. Our Lord Jesus undertook to satisfy God's injured honour, and he did it by humbling himself. The voice of the Father from heaven, which had declared him to be his beloved Son, at his baptism, and when he was transfigured, was heard proclaiming that He had both glorified his name, and would glorify it. Christ, reconciling the world to God by the merit of his death, broke the power of death, and cast out Satan as a destroyer. Christ, bringing the world to God by the doctrine of his cross, broke the power of sin, and cast out Satan as a deceiver. The soul that was at a distance from Christ, is brought to love him and trust him. Jesus was now going to heaven, and he would draw men's hearts to him thither. There is power in the death of Christ to draw souls to him. We have heard from the gospel that which exalts free grace, and we have heard also that which enjoins duty; we must from the heart embrace both, and not separate them.