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.
Is condemned already — Continues under the condemnation which Divine justice has passed upon all sinners; and has this superadded, He hath not believed on the name of the only begotten Son of God, and therefore is guilty of the grossest insult to the Divine majesty, in neglecting, slighting, and despising the salvation which the infinite mercy of God had provided for him.