He who believes in him is not judged. He who doesn't believe has been judged already, because he has not believed in the name of the one and only Son of God.
Because - This word does not imply that the ground or reason of their condemnation is that they have not believed, or that they are condemned because they do not believe on him, for there are millions of sinners who have never heard of him; but the meaning is this: There is but one way by which men can be freed from condemnation. All people without the gospel are condemned. They who do not believe are still under this condemnation, not having embraced the only way by which they can be delivered from it. The verse may be thus paraphrased: “All people are by nature condemned. There is but one way of being delivered from this state by believing on the Son of God. They who do not believe or remain in that state are still condemned, for they have not embraced the only way in which they can be freed from it. Nevertheless, those to whom the gospel comes greatly heighten their guilt and condemnation by rejecting the offers of mercy, and trampling under foot the blood of the Son of God, Luke 12:47; Matthew 11:23; Hebrews 10:29; Proverbs 1:24-30. And there are thousands going to eternity under this “double” condemnation: